diff --git a/main/assets.cc b/main/assets.cc
index f363cae..ad61944 100644
--- a/main/assets.cc
+++ b/main/assets.cc
@@ -12,6 +12,7 @@
 
 #include <esp_log.h>
 #include <esp_timer.h>
+#include <esp_heap_caps.h>
 #include <cbin_font.h>
 
 
@@ -464,16 +465,21 @@ bool Assets::Download(std::string url, std::function<void(int progress, size_t s
              SECTOR_SIZE, content_length, sectors_to_erase, total_erase_size);
     
     // 写入新的资源文件到分区，一边erase一边写入
-    char buffer[512];
+    char* buffer = (char*)heap_caps_malloc(SECTOR_SIZE, MALLOC_CAP_INTERNAL);
+    if (buffer == nullptr) {
+        ESP_LOGE(TAG, "Failed to allocate buffer");
+        return false;
+    }
     size_t total_written = 0;
     size_t recent_written = 0;
     size_t current_sector = 0;
     auto last_calc_time = esp_timer_get_time();
     
     while (true) {
-        int ret = http->Read(buffer, sizeof(buffer));
+        int ret = http->Read(buffer, SECTOR_SIZE);
         if (ret < 0) {
             ESP_LOGE(TAG, "Failed to read HTTP data: %s", esp_err_to_name(ret));
+            heap_caps_free(buffer);
             return false;
         }
 
@@ -493,6 +499,7 @@ bool Assets::Download(std::string url, std::function<void(int progress, size_t s
             // 确保擦除范围不超过分区大小
             if (sector_end > partition_->size) {
                 ESP_LOGE(TAG, "Sector end (%u) exceeds partition size (%lu)", sector_end, partition_->size);
+                heap_caps_free(buffer);
                 return false;
             }
             
@@ -500,6 +507,7 @@ bool Assets::Download(std::string url, std::function<void(int progress, size_t s
             esp_err_t err = esp_partition_erase_range(partition_, sector_start, SECTOR_SIZE);
             if (err != ESP_OK) {
                 ESP_LOGE(TAG, "Failed to erase sector %u at offset %u: %s", current_sector, sector_start, esp_err_to_name(err));
+                heap_caps_free(buffer);
                 return false;
             }
             
@@ -510,6 +518,7 @@ bool Assets::Download(std::string url, std::function<void(int progress, size_t s
         esp_err_t err = esp_partition_write(partition_, total_written, buffer, ret);
         if (err != ESP_OK) {
             ESP_LOGE(TAG, "Failed to write to assets partition at offset %u: %s", total_written, esp_err_to_name(err));
+            heap_caps_free(buffer);
             return false;
         }
 
@@ -531,6 +540,7 @@ bool Assets::Download(std::string url, std::function<void(int progress, size_t s
     }
     
     http->Close();
+    heap_caps_free(buffer);
 
     if (total_written != content_length) {
         ESP_LOGE(TAG, "Downloaded size (%u) does not match expected size (%u)", total_written, content_length);
diff --git a/main/assets/locales/ar-SA/language.json b/main/assets/locales/ar-SA/language.json
index 88263e4..31d3078 100644
--- a/main/assets/locales/ar-SA/language.json
+++ b/main/assets/locales/ar-SA/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "جاري تحميل الموارد...",
         "PLEASE_WAIT": "يرجى الانتظار...",
         "FOUND_NEW_ASSETS": "تم العثور على موارد جديدة: %s",
-        "HELLO_MY_FRIEND": "مرحباً، صديقي!"
+        "HELLO_MY_FRIEND": "مرحباً، صديقي!",
+        "CONNECTION_SUCCESSFUL": "تم الاتصال بنجاح",
+        "FLIGHT_MODE_OFF": "وضع الطيران معطل",
+        "FLIGHT_MODE_ON": "وضع الطيران قيد التشغيل",
+        "MODEM_INIT_ERROR": "فشل تهيئة المودم"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/bg-BG/language.json b/main/assets/locales/bg-BG/language.json
index 9a6b05e..d222be6 100644
--- a/main/assets/locales/bg-BG/language.json
+++ b/main/assets/locales/bg-BG/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Намерени нови ресурси: %s",
         "DOWNLOAD_ASSETS_FAILED": "Неуспешно изтегляне на ресурси",
         "LOADING_ASSETS": "Зареждане на ресурси...",
-        "HELLO_MY_FRIEND": "Здравей, мой приятел!"
+        "HELLO_MY_FRIEND": "Здравей, мой приятел!",
+        "FLIGHT_MODE_OFF": "Режим на самолет е изключен",
+        "FLIGHT_MODE_ON": "Режим на самолет е включен",
+        "MODEM_INIT_ERROR": "Неуспешна инициализация на модема"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/ca-ES/language.json b/main/assets/locales/ca-ES/language.json
index 02337e3..566ceab 100644
--- a/main/assets/locales/ca-ES/language.json
+++ b/main/assets/locales/ca-ES/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "S'han trobat nous recursos: %s",
         "DOWNLOAD_ASSETS_FAILED": "No s'han pogut descarregar els recursos",
         "LOADING_ASSETS": "Carregant recursos...",
-        "HELLO_MY_FRIEND": "Hola, amic meu!"
+        "HELLO_MY_FRIEND": "Hola, amic meu!",
+        "FLIGHT_MODE_OFF": "El mode avió està desactivat",
+        "FLIGHT_MODE_ON": "El mode avió està activat",
+        "MODEM_INIT_ERROR": "Error d'inicialització del mòdem"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/cs-CZ/language.json b/main/assets/locales/cs-CZ/language.json
index 1e18a5c..7386fdf 100644
--- a/main/assets/locales/cs-CZ/language.json
+++ b/main/assets/locales/cs-CZ/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Načítání prostředků...",
         "PLEASE_WAIT": "Prosím čekejte...",
         "FOUND_NEW_ASSETS": "Nalezeny nové prostředky: %s",
-        "HELLO_MY_FRIEND": "Ahoj, můj příteli!"
+        "HELLO_MY_FRIEND": "Ahoj, můj příteli!",
+        "CONNECTION_SUCCESSFUL": "Připojení úspěšné",
+        "FLIGHT_MODE_OFF": "Letecký režim je vypnutý",
+        "FLIGHT_MODE_ON": "Letecký režim je zapnutý",
+        "MODEM_INIT_ERROR": "Chyba inicializace modemu"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/da-DK/language.json b/main/assets/locales/da-DK/language.json
index 918598b..96c9d72 100644
--- a/main/assets/locales/da-DK/language.json
+++ b/main/assets/locales/da-DK/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Fandt nye ressourcer: %s",
         "DOWNLOAD_ASSETS_FAILED": "Download af ressourcer mislykkedes",
         "LOADING_ASSETS": "Indlæser ressourcer...",
-        "HELLO_MY_FRIEND": "Hej, min ven!"
+        "HELLO_MY_FRIEND": "Hej, min ven!",
+        "FLIGHT_MODE_OFF": "Flytilstand er slukket",
+        "FLIGHT_MODE_ON": "Flytilstand er tændt",
+        "MODEM_INIT_ERROR": "Modeminitialisering mislykkedes"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/de-DE/language.json b/main/assets/locales/de-DE/language.json
index 724e267..20dfbca 100644
--- a/main/assets/locales/de-DE/language.json
+++ b/main/assets/locales/de-DE/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Ressourcen werden geladen...",
         "PLEASE_WAIT": "Bitte warten...",
         "FOUND_NEW_ASSETS": "Neue Ressourcen gefunden: %s",
-        "HELLO_MY_FRIEND": "Hallo, mein Freund!"
+        "HELLO_MY_FRIEND": "Hallo, mein Freund!",
+        "CONNECTION_SUCCESSFUL": "Verbindung erfolgreich",
+        "FLIGHT_MODE_OFF": "Flugmodus ist deaktiviert",
+        "FLIGHT_MODE_ON": "Flugmodus ist aktiviert",
+        "MODEM_INIT_ERROR": "Modem-Initialisierung fehlgeschlagen"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/el-GR/language.json b/main/assets/locales/el-GR/language.json
index ccbea53..287db5e 100644
--- a/main/assets/locales/el-GR/language.json
+++ b/main/assets/locales/el-GR/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Βρέθηκαν νέοι πόροι: %s",
         "DOWNLOAD_ASSETS_FAILED": "Αποτυχία λήψης πόρων",
         "LOADING_ASSETS": "Φόρτωση πόρων...",
-        "HELLO_MY_FRIEND": "Γεια σου, φίλε μου!"
+        "HELLO_MY_FRIEND": "Γεια σου, φίλε μου!",
+        "FLIGHT_MODE_OFF": "Η λειτουργία πτήσης είναι απενεργοποιημένη",
+        "FLIGHT_MODE_ON": "Η λειτουργία πτήσης είναι ενεργή",
+        "MODEM_INIT_ERROR": "Αποτυχία αρχικοποίησης modem"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/en-US/language.json b/main/assets/locales/en-US/language.json
index 426015e..8bb764a 100644
--- a/main/assets/locales/en-US/language.json
+++ b/main/assets/locales/en-US/language.json
@@ -13,6 +13,8 @@
         "REG_ERROR": "Unable to access network, please check SIM card status",
         "MODEM_INIT_ERROR": "Modem initialization failed",
         "DETECTING_MODULE": "Detecting module...",
+        "FLIGHT_MODE_ON": "Flight mode is on",
+        "FLIGHT_MODE_OFF": "Flight mode is off",
         "REGISTERING_NETWORK": "Waiting for network...",
         "CHECKING_NEW_VERSION": "Checking for new version...",
         "CHECK_NEW_VERSION_FAILED": "Check for new version failed, will retry in %d seconds: %s",
diff --git a/main/assets/locales/es-ES/language.json b/main/assets/locales/es-ES/language.json
index e7f349b..9722fc4 100644
--- a/main/assets/locales/es-ES/language.json
+++ b/main/assets/locales/es-ES/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Cargando recursos...",
         "PLEASE_WAIT": "Por favor espere...",
         "FOUND_NEW_ASSETS": "Encontrados nuevos recursos: %s",
-        "HELLO_MY_FRIEND": "¡Hola, mi amigo!"
+        "HELLO_MY_FRIEND": "¡Hola, mi amigo!",
+        "CONNECTION_SUCCESSFUL": "Conexión exitosa",
+        "FLIGHT_MODE_OFF": "El modo avión está desactivado",
+        "FLIGHT_MODE_ON": "El modo avión está activado",
+        "MODEM_INIT_ERROR": "Error de inicialización del módem"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/fa-IR/language.json b/main/assets/locales/fa-IR/language.json
index 784f6bd..597334e 100644
--- a/main/assets/locales/fa-IR/language.json
+++ b/main/assets/locales/fa-IR/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "منابع جدید یافت شد: %s",
         "DOWNLOAD_ASSETS_FAILED": "دانلود منابع ناموفق بود",
         "LOADING_ASSETS": "بارگذاری منابع...",
-        "HELLO_MY_FRIEND": "سلام، دوست من!"
+        "HELLO_MY_FRIEND": "سلام، دوست من!",
+        "FLIGHT_MODE_OFF": "حالت پرواز خاموش است",
+        "FLIGHT_MODE_ON": "حالت پرواز روشن است",
+        "MODEM_INIT_ERROR": "خطا در راه‌اندازی مودم"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/fi-FI/language.json b/main/assets/locales/fi-FI/language.json
index 2326ee4..7ca8db7 100644
--- a/main/assets/locales/fi-FI/language.json
+++ b/main/assets/locales/fi-FI/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Ladataan resursseja...",
         "PLEASE_WAIT": "Odota hetki...",
         "FOUND_NEW_ASSETS": "Löydetty uusia resursseja: %s",
-        "HELLO_MY_FRIEND": "Hei, ystäväni!"
+        "HELLO_MY_FRIEND": "Hei, ystäväni!",
+        "CONNECTION_SUCCESSFUL": "Yhteys onnistui",
+        "FLIGHT_MODE_OFF": "Lentotila on pois päältä",
+        "FLIGHT_MODE_ON": "Lentotila on päällä",
+        "MODEM_INIT_ERROR": "Modeemin alustus epäonnistui"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/fil-PH/language.json b/main/assets/locales/fil-PH/language.json
index 2d35fc5..6907698 100644
--- a/main/assets/locales/fil-PH/language.json
+++ b/main/assets/locales/fil-PH/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Nakahanap ng mga bagong assets: %s",
         "DOWNLOAD_ASSETS_FAILED": "Nabigo ang pag-download ng mga assets",
         "LOADING_ASSETS": "Nilo-load ang mga assets...",
-        "HELLO_MY_FRIEND": "Kumusta, kaibigan ko!"
+        "HELLO_MY_FRIEND": "Kumusta, kaibigan ko!",
+        "FLIGHT_MODE_OFF": "Naka-off ang flight mode",
+        "FLIGHT_MODE_ON": "Naka-on ang flight mode",
+        "MODEM_INIT_ERROR": "Nabigo ang pag-initialize ng modem"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/fr-FR/language.json b/main/assets/locales/fr-FR/language.json
index 244cade..d1e16da 100644
--- a/main/assets/locales/fr-FR/language.json
+++ b/main/assets/locales/fr-FR/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Chargement des ressources...",
         "PLEASE_WAIT": "Veuillez patienter...",
         "FOUND_NEW_ASSETS": "Nouvelles ressources trouvées: %s",
-        "HELLO_MY_FRIEND": "Bonjour, mon ami !"
+        "HELLO_MY_FRIEND": "Bonjour, mon ami !",
+        "CONNECTION_SUCCESSFUL": "Connexion réussie",
+        "FLIGHT_MODE_OFF": "Le mode avion est désactivé",
+        "FLIGHT_MODE_ON": "Le mode avion est activé",
+        "MODEM_INIT_ERROR": "Échec de l'initialisation du modem"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/he-IL/language.json b/main/assets/locales/he-IL/language.json
index e3570c0..cac29a4 100644
--- a/main/assets/locales/he-IL/language.json
+++ b/main/assets/locales/he-IL/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "נמצאו משאבים חדשים: %s",
         "DOWNLOAD_ASSETS_FAILED": "הורדת משאבים נכשלה",
         "LOADING_ASSETS": "טוען משאבים...",
-        "HELLO_MY_FRIEND": "שלום, ידידי!"
+        "HELLO_MY_FRIEND": "שלום, ידידי!",
+        "FLIGHT_MODE_OFF": "מצב טיסה כבוי",
+        "FLIGHT_MODE_ON": "מצב טיסה מופעל",
+        "MODEM_INIT_ERROR": "אתחול המודם נכשל"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/hi-IN/language.json b/main/assets/locales/hi-IN/language.json
index 732176e..25af4eb 100644
--- a/main/assets/locales/hi-IN/language.json
+++ b/main/assets/locales/hi-IN/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "संसाधन लोड हो रहे हैं...",
         "PLEASE_WAIT": "कृपया प्रतीक्षा करें...",
         "FOUND_NEW_ASSETS": "नए संसाधन मिले: %s",
-        "HELLO_MY_FRIEND": "नमस्ते, मेरे दोस्त!"
+        "HELLO_MY_FRIEND": "नमस्ते, मेरे दोस्त!",
+        "CONNECTION_SUCCESSFUL": "कनेक्शन सफल",
+        "FLIGHT_MODE_OFF": "फ़्लाइट मोड बंद है",
+        "FLIGHT_MODE_ON": "फ़्लाइट मोड चालू है",
+        "MODEM_INIT_ERROR": "मॉडेम आरंभीकरण विफल"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/hr-HR/language.json b/main/assets/locales/hr-HR/language.json
index 12ce157..25e5821 100644
--- a/main/assets/locales/hr-HR/language.json
+++ b/main/assets/locales/hr-HR/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Pronađeni novi resursi: %s",
         "DOWNLOAD_ASSETS_FAILED": "Preuzimanje resursa nije uspjelo",
         "LOADING_ASSETS": "Učitavanje resursa...",
-        "HELLO_MY_FRIEND": "Bok, moj prijatelju!"
+        "HELLO_MY_FRIEND": "Bok, moj prijatelju!",
+        "FLIGHT_MODE_OFF": "Način rada u zrakoplovu je isključen",
+        "FLIGHT_MODE_ON": "Način rada u zrakoplovu je uključen",
+        "MODEM_INIT_ERROR": "Neuspjela inicijalizacija modema"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/hu-HU/language.json b/main/assets/locales/hu-HU/language.json
index 399de04..e6594ef 100644
--- a/main/assets/locales/hu-HU/language.json
+++ b/main/assets/locales/hu-HU/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Új erőforrások találva: %s",
         "DOWNLOAD_ASSETS_FAILED": "Az erőforrások letöltése sikertelen",
         "LOADING_ASSETS": "Erőforrások betöltése...",
-        "HELLO_MY_FRIEND": "Helló, barátom!"
+        "HELLO_MY_FRIEND": "Helló, barátom!",
+        "FLIGHT_MODE_OFF": "A repülési mód ki van kapcsolva",
+        "FLIGHT_MODE_ON": "A repülési mód be van kapcsolva",
+        "MODEM_INIT_ERROR": "A modem inicializálása sikertelen"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/id-ID/language.json b/main/assets/locales/id-ID/language.json
index 11224a6..012b1f5 100644
--- a/main/assets/locales/id-ID/language.json
+++ b/main/assets/locales/id-ID/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Memuat aset...",
         "PLEASE_WAIT": "Mohon tunggu...",
         "FOUND_NEW_ASSETS": "Ditemukan aset baru: %s",
-        "HELLO_MY_FRIEND": "Halo, teman saya!"
+        "HELLO_MY_FRIEND": "Halo, teman saya!",
+        "CONNECTION_SUCCESSFUL": "Koneksi berhasil",
+        "FLIGHT_MODE_OFF": "Mode pesawat nonaktif",
+        "FLIGHT_MODE_ON": "Mode pesawat aktif",
+        "MODEM_INIT_ERROR": "Gagal menginisialisasi modem"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/it-IT/language.json b/main/assets/locales/it-IT/language.json
index 54cc9bc..f67c7ea 100644
--- a/main/assets/locales/it-IT/language.json
+++ b/main/assets/locales/it-IT/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Caricamento risorse...",
         "PLEASE_WAIT": "Attendere prego...",
         "FOUND_NEW_ASSETS": "Trovate nuove risorse: %s",
-        "HELLO_MY_FRIEND": "Ciao, amico mio!"
+        "HELLO_MY_FRIEND": "Ciao, amico mio!",
+        "CONNECTION_SUCCESSFUL": "Connessione riuscita",
+        "FLIGHT_MODE_OFF": "La modalità aereo è disattivata",
+        "FLIGHT_MODE_ON": "La modalità aereo è attiva",
+        "MODEM_INIT_ERROR": "Inizializzazione modem non riuscita"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/ja-JP/language.json b/main/assets/locales/ja-JP/language.json
index 1c2bd82..20dbe5d 100644
--- a/main/assets/locales/ja-JP/language.json
+++ b/main/assets/locales/ja-JP/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "アセットを読み込み中...",
         "PLEASE_WAIT": "お待ちください...",
         "FOUND_NEW_ASSETS": "新しいアセットが見つかりました: %s",
-        "HELLO_MY_FRIEND": "こんにちは、友達！"
+        "HELLO_MY_FRIEND": "こんにちは、友達！",
+        "CONNECTION_SUCCESSFUL": "接続成功",
+        "FLIGHT_MODE_OFF": "機内モードがオフです",
+        "FLIGHT_MODE_ON": "機内モードがオンです",
+        "MODEM_INIT_ERROR": "モデムの初期化に失敗しました"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/ko-KR/language.json b/main/assets/locales/ko-KR/language.json
index 1d65bfb..4ccc066 100644
--- a/main/assets/locales/ko-KR/language.json
+++ b/main/assets/locales/ko-KR/language.json
@@ -51,6 +51,9 @@
         "LOADING_ASSETS": "에셋 로딩 중...",
         "PLEASE_WAIT": "잠시 기다려 주세요...",
         "FOUND_NEW_ASSETS": "새로운 에셋을 발견했습니다: %s",
-        "HELLO_MY_FRIEND": "안녕하세요, 친구!"
+        "HELLO_MY_FRIEND": "안녕하세요, 친구!",
+        "FLIGHT_MODE_OFF": "비행기 모드가 꺼져 있습니다",
+        "FLIGHT_MODE_ON": "비행기 모드가 켜져 있습니다",
+        "MODEM_INIT_ERROR": "모뎀 초기화 실패"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/ms-MY/language.json b/main/assets/locales/ms-MY/language.json
index 5a6fc0b..4797cfc 100644
--- a/main/assets/locales/ms-MY/language.json
+++ b/main/assets/locales/ms-MY/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Menemui aset baharu: %s",
         "DOWNLOAD_ASSETS_FAILED": "Gagal memuat turun aset",
         "LOADING_ASSETS": "Memuatkan aset...",
-        "HELLO_MY_FRIEND": "Hai, kawan saya!"
+        "HELLO_MY_FRIEND": "Hai, kawan saya!",
+        "FLIGHT_MODE_OFF": "Mod penerbangan dimatikan",
+        "FLIGHT_MODE_ON": "Mod penerbangan dihidupkan",
+        "MODEM_INIT_ERROR": "Modem gagal dimulakan"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/nb-NO/language.json b/main/assets/locales/nb-NO/language.json
index 71b0a57..4540e63 100644
--- a/main/assets/locales/nb-NO/language.json
+++ b/main/assets/locales/nb-NO/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Fant nye ressurser: %s",
         "DOWNLOAD_ASSETS_FAILED": "Nedlasting av ressurser mislyktes",
         "LOADING_ASSETS": "Laster ressurser...",
-        "HELLO_MY_FRIEND": "Hei, min venn!"
+        "HELLO_MY_FRIEND": "Hei, min venn!",
+        "FLIGHT_MODE_OFF": "Flymodus er av",
+        "FLIGHT_MODE_ON": "Flymodus er på",
+        "MODEM_INIT_ERROR": "Modeminitialisering mislyktes"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/nl-NL/language.json b/main/assets/locales/nl-NL/language.json
index 2c1a360..1863b71 100644
--- a/main/assets/locales/nl-NL/language.json
+++ b/main/assets/locales/nl-NL/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Nieuwe bronnen gevonden: %s",
         "DOWNLOAD_ASSETS_FAILED": "Downloaden van bronnen mislukt",
         "LOADING_ASSETS": "Bronnen laden...",
-        "HELLO_MY_FRIEND": "Hallo, mijn vriend!"
+        "HELLO_MY_FRIEND": "Hallo, mijn vriend!",
+        "FLIGHT_MODE_OFF": "Vliegtuigmodus is uitgeschakeld",
+        "FLIGHT_MODE_ON": "Vliegtuigmodus is ingeschakeld",
+        "MODEM_INIT_ERROR": "Modeminitialisatie mislukt"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/pl-PL/language.json b/main/assets/locales/pl-PL/language.json
index b54c292..ba02fb9 100644
--- a/main/assets/locales/pl-PL/language.json
+++ b/main/assets/locales/pl-PL/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Ładowanie zasobów...",
         "PLEASE_WAIT": "Proszę czekać...",
         "FOUND_NEW_ASSETS": "Znaleziono nowe zasoby: %s",
-        "HELLO_MY_FRIEND": "Cześć, mój przyjacielu!"
+        "HELLO_MY_FRIEND": "Cześć, mój przyjacielu!",
+        "CONNECTION_SUCCESSFUL": "Połączenie udane",
+        "FLIGHT_MODE_OFF": "Tryb samolotowy jest wyłączony",
+        "FLIGHT_MODE_ON": "Tryb samolotowy jest włączony",
+        "MODEM_INIT_ERROR": "Inicjalizacja modemu nie powiodła się"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/pt-PT/language.json b/main/assets/locales/pt-PT/language.json
index da0e0e2..d2c125a 100644
--- a/main/assets/locales/pt-PT/language.json
+++ b/main/assets/locales/pt-PT/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "A carregar recursos...",
         "PLEASE_WAIT": "Por favor aguarde...",
         "FOUND_NEW_ASSETS": "Encontrados novos recursos: %s",
-        "HELLO_MY_FRIEND": "Olá, meu amigo!"
+        "HELLO_MY_FRIEND": "Olá, meu amigo!",
+        "CONNECTION_SUCCESSFUL": "Ligação bem-sucedida",
+        "FLIGHT_MODE_OFF": "O modo avião está desativado",
+        "FLIGHT_MODE_ON": "O modo avião está ativado",
+        "MODEM_INIT_ERROR": "Falha na inicialização do modem"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/ro-RO/language.json b/main/assets/locales/ro-RO/language.json
index d8ec774..65ac52b 100644
--- a/main/assets/locales/ro-RO/language.json
+++ b/main/assets/locales/ro-RO/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Se încarcă resursele...",
         "PLEASE_WAIT": "Vă rugăm să așteptați...",
         "FOUND_NEW_ASSETS": "S-au găsit resurse noi: %s",
-        "HELLO_MY_FRIEND": "Salut, prietenul meu!"
+        "HELLO_MY_FRIEND": "Salut, prietenul meu!",
+        "CONNECTION_SUCCESSFUL": "Conexiune reușită",
+        "FLIGHT_MODE_OFF": "Modul avion este dezactivat",
+        "FLIGHT_MODE_ON": "Modul avion este activat",
+        "MODEM_INIT_ERROR": "Inițializarea modemului a eșuat"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/ru-RU/language.json b/main/assets/locales/ru-RU/language.json
index ebac606..4fb278d 100644
--- a/main/assets/locales/ru-RU/language.json
+++ b/main/assets/locales/ru-RU/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Загрузка ресурсов...",
         "PLEASE_WAIT": "Пожалуйста, подождите...",
         "FOUND_NEW_ASSETS": "Найдены новые ресурсы: %s",
-        "HELLO_MY_FRIEND": "Привет, мой друг!"
+        "HELLO_MY_FRIEND": "Привет, мой друг!",
+        "CONNECTION_SUCCESSFUL": "Подключение успешно",
+        "FLIGHT_MODE_OFF": "Режим полета выключен",
+        "FLIGHT_MODE_ON": "Режим полета включен",
+        "MODEM_INIT_ERROR": "Ошибка инициализации модема"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/sk-SK/language.json b/main/assets/locales/sk-SK/language.json
index 5c56f48..e7d029c 100644
--- a/main/assets/locales/sk-SK/language.json
+++ b/main/assets/locales/sk-SK/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Nájdené nové zdroje: %s",
         "DOWNLOAD_ASSETS_FAILED": "Sťahovanie zdrojov zlyhalo",
         "LOADING_ASSETS": "Načítavanie zdrojov...",
-        "HELLO_MY_FRIEND": "Ahoj, môj priateľ!"
+        "HELLO_MY_FRIEND": "Ahoj, môj priateľ!",
+        "FLIGHT_MODE_OFF": "Letecký režim je vypnutý",
+        "FLIGHT_MODE_ON": "Letecký režim je zapnutý",
+        "MODEM_INIT_ERROR": "Chyba inicializácie modemu"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/sl-SI/language.json b/main/assets/locales/sl-SI/language.json
index 0513a7d..8e5a45b 100644
--- a/main/assets/locales/sl-SI/language.json
+++ b/main/assets/locales/sl-SI/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Najdeni novi viri: %s",
         "DOWNLOAD_ASSETS_FAILED": "Prenos virov ni uspel",
         "LOADING_ASSETS": "Nalaganje virov...",
-        "HELLO_MY_FRIEND": "Pozdravljeni, moj prijatelj!"
+        "HELLO_MY_FRIEND": "Pozdravljeni, moj prijatelj!",
+        "FLIGHT_MODE_OFF": "Način leta je izklopljen",
+        "FLIGHT_MODE_ON": "Način leta je vklopljen",
+        "MODEM_INIT_ERROR": "Inicializacija modema ni uspela"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/sr-RS/language.json b/main/assets/locales/sr-RS/language.json
index b86bf0a..172d3fe 100644
--- a/main/assets/locales/sr-RS/language.json
+++ b/main/assets/locales/sr-RS/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Пронађени нови ресурси: %s",
         "DOWNLOAD_ASSETS_FAILED": "Преузимање ресурса није успело",
         "LOADING_ASSETS": "Учитавање ресурса...",
-        "HELLO_MY_FRIEND": "Здраво, пријатељу!"
+        "HELLO_MY_FRIEND": "Здраво, пријатељу!",
+        "FLIGHT_MODE_OFF": "Режим лета је искључен",
+        "FLIGHT_MODE_ON": "Режим лета је укључен",
+        "MODEM_INIT_ERROR": "Иницијализација модема није успела"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/sv-SE/language.json b/main/assets/locales/sv-SE/language.json
index 444cac9..d85fe5b 100644
--- a/main/assets/locales/sv-SE/language.json
+++ b/main/assets/locales/sv-SE/language.json
@@ -51,7 +51,9 @@
         "FOUND_NEW_ASSETS": "Hittade nya resurser: %s",
         "DOWNLOAD_ASSETS_FAILED": "Nedladdning av resurser misslyckades",
         "LOADING_ASSETS": "Laddar resurser...",
-        "HELLO_MY_FRIEND": "Hej, min vän!"
+        "HELLO_MY_FRIEND": "Hej, min vän!",
+        "FLIGHT_MODE_OFF": "Flygläge är av",
+        "FLIGHT_MODE_ON": "Flygläge är på",
+        "MODEM_INIT_ERROR": "Modeminitiering misslyckades"
     }
-}
-
+}
\ No newline at end of file
diff --git a/main/assets/locales/th-TH/language.json b/main/assets/locales/th-TH/language.json
index e97fed1..6c05468 100644
--- a/main/assets/locales/th-TH/language.json
+++ b/main/assets/locales/th-TH/language.json
@@ -51,6 +51,9 @@
         "LOADING_ASSETS": "กำลังโหลดทรัพยากร...",
         "PLEASE_WAIT": "กรุณารอสักครู่...",
         "FOUND_NEW_ASSETS": "พบทรัพยากรใหม่: %s",
-        "HELLO_MY_FRIEND": "สวัสดี เพื่อนของฉัน!"
+        "HELLO_MY_FRIEND": "สวัสดี เพื่อนของฉัน!",
+        "FLIGHT_MODE_OFF": "โหมดเครื่องบินปิดอยู่",
+        "FLIGHT_MODE_ON": "โหมดเครื่องบินเปิดอยู่",
+        "MODEM_INIT_ERROR": "การเริ่มต้นโมเด็มล้มเหลว"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/tr-TR/language.json b/main/assets/locales/tr-TR/language.json
index 4d0f70f..dacfa76 100644
--- a/main/assets/locales/tr-TR/language.json
+++ b/main/assets/locales/tr-TR/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Varlıklar yükleniyor...",
         "PLEASE_WAIT": "Lütfen bekleyin...",
         "FOUND_NEW_ASSETS": "Yeni varlıklar bulundu: %s",
-        "HELLO_MY_FRIEND": "Merhaba, arkadaşım!"
+        "HELLO_MY_FRIEND": "Merhaba, arkadaşım!",
+        "CONNECTION_SUCCESSFUL": "Bağlantı başarılı",
+        "FLIGHT_MODE_OFF": "Uçak modu kapalı",
+        "FLIGHT_MODE_ON": "Uçak modu açık",
+        "MODEM_INIT_ERROR": "Modem başlatma hatası"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/uk-UA/language.json b/main/assets/locales/uk-UA/language.json
index d844a38..3f07c2a 100644
--- a/main/assets/locales/uk-UA/language.json
+++ b/main/assets/locales/uk-UA/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "Завантаження ресурсів...",
         "PLEASE_WAIT": "Будь ласка, зачекайте...",
         "FOUND_NEW_ASSETS": "Знайдено нові ресурси: %s",
-        "HELLO_MY_FRIEND": "Привіт, мій друже!"
+        "HELLO_MY_FRIEND": "Привіт, мій друже!",
+        "CONNECTION_SUCCESSFUL": "Підключення успішне",
+        "FLIGHT_MODE_OFF": "Режим польоту вимкнено",
+        "FLIGHT_MODE_ON": "Режим польоту увімкнено",
+        "MODEM_INIT_ERROR": "Помилка ініціалізації модему"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/vi-VN/language.json b/main/assets/locales/vi-VN/language.json
index e010b7b..ece31d3 100644
--- a/main/assets/locales/vi-VN/language.json
+++ b/main/assets/locales/vi-VN/language.json
@@ -51,6 +51,9 @@
         "LOADING_ASSETS": "Đang tải tài nguyên...",
         "PLEASE_WAIT": "Vui lòng đợi...",
         "FOUND_NEW_ASSETS": "Tìm thấy tài nguyên mới: %s",
-        "HELLO_MY_FRIEND": "Xin chào, bạn của tôi!"
+        "HELLO_MY_FRIEND": "Xin chào, bạn của tôi!",
+        "FLIGHT_MODE_OFF": "Chế độ máy bay đang tắt",
+        "FLIGHT_MODE_ON": "Chế độ máy bay đang bật",
+        "MODEM_INIT_ERROR": "Khởi tạo modem thất bại"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/zh-CN/language.json b/main/assets/locales/zh-CN/language.json
index 83ad54a..a21f51a 100644
--- a/main/assets/locales/zh-CN/language.json
+++ b/main/assets/locales/zh-CN/language.json
@@ -51,6 +51,9 @@
         "LOADING_ASSETS": "加载资源...",
         "PLEASE_WAIT": "请稍候...",
         "FOUND_NEW_ASSETS": "发现新资源: %s",
-        "HELLO_MY_FRIEND": "你好，我的朋友！"
+        "HELLO_MY_FRIEND": "你好，我的朋友！",
+        "CONNECTION_SUCCESSFUL": "连接成功",
+        "FLIGHT_MODE_OFF": "飞行模式已关闭",
+        "FLIGHT_MODE_ON": "飞行模式已开启"
     }
 }
\ No newline at end of file
diff --git a/main/assets/locales/zh-TW/language.json b/main/assets/locales/zh-TW/language.json
index f035b36..bbabcd9 100644
--- a/main/assets/locales/zh-TW/language.json
+++ b/main/assets/locales/zh-TW/language.json
@@ -50,6 +50,10 @@
         "LOADING_ASSETS": "載入資源...",
         "PLEASE_WAIT": "請稍候...",
         "FOUND_NEW_ASSETS": "發現新資源: %s",
-        "HELLO_MY_FRIEND": "你好，我的朋友！"
+        "HELLO_MY_FRIEND": "你好，我的朋友！",
+        "CONNECTION_SUCCESSFUL": "連線成功",
+        "FLIGHT_MODE_OFF": "飛航模式已關閉",
+        "FLIGHT_MODE_ON": "飛航模式已開啟",
+        "MODEM_INIT_ERROR": "模組初始化失敗"
     }
 }
\ No newline at end of file
diff --git a/main/boards/common/nt26_board.cc b/main/boards/common/nt26_board.cc
index 024d6a0..8ca55e5 100644
--- a/main/boards/common/nt26_board.cc
+++ b/main/boards/common/nt26_board.cc
@@ -107,6 +107,9 @@ void Nt26Board::StartNetwork() {
                 ScheduleAsyncStop();
                 OnNetworkEvent(NetworkEvent::ModemErrorInitFailed);
                 break;
+            case UartEthModem::UartEthModemEvent::InFlightMode:
+                ESP_LOGW(TAG, "Modem in flight mode");
+                break;
         }
     });
 
diff --git a/main/display/lcd_display.cc b/main/display/lcd_display.cc
index cb4f96d..03e1c84 100644
--- a/main/display/lcd_display.cc
+++ b/main/display/lcd_display.cc
@@ -12,6 +12,7 @@
 #include <esp_lvgl_port.h>
 #include <esp_psram.h>
 #include <cstring>
+#include <src/misc/cache/lv_cache.h>
 
 #include "board.h"
 
@@ -568,28 +569,25 @@ void LcdDisplay::SetChatMessage(const char* role, const char* content) {
     lv_obj_t* msg_text = lv_label_create(msg_bubble);
     lv_label_set_text(msg_text, content);
     
-    // Calculate actual text width
-    lv_coord_t text_width = lv_txt_get_width(content, strlen(content), text_font, 0);
-
-    // Calculate bubble width
+    // Calculate bubble width constraints
     lv_coord_t max_width = LV_HOR_RES * 85 / 100 - 16;  // 85% of screen width
     lv_coord_t min_width = 20;  
-    lv_coord_t bubble_width;
+    
+    // Let LVGL calculate the natural text width first
+    lv_obj_set_width(msg_text, LV_SIZE_CONTENT);
+    lv_obj_update_layout(msg_text);
+    lv_coord_t text_width = lv_obj_get_width(msg_text);
     
     // Ensure text width is not less than minimum width
     if (text_width < min_width) {
         text_width = min_width;
     }
 
-    // If text width is less than max width, use text width
-    if (text_width < max_width) {
-        bubble_width = text_width; 
-    } else {
-        bubble_width = max_width;
-    }
+    // Constrain to max width
+    lv_coord_t bubble_width = (text_width < max_width) ? text_width : max_width;
     
     // Set message text width
-    lv_obj_set_width(msg_text, bubble_width);  // Subtract padding
+    lv_obj_set_width(msg_text, bubble_width);
     lv_label_set_long_mode(msg_text, LV_LABEL_LONG_WRAP);
 
     // Set bubble width
@@ -1113,7 +1111,7 @@ void LcdDisplay::SetTheme(Theme* theme) {
         if (lv_obj_get_child_cnt(obj) > 0) {
             // Might be a container, check if it's a user or system message container
             // User and system message containers are transparent
-            lv_opa_t bg_opa = lv_obj_get_style_bg_opa(obj, 0);
+            lv_opa_t bg_opa = lv_obj_get_style_bg_opa(obj, LV_PART_MAIN);
             if (bg_opa == LV_OPA_TRANSP) {
                 // This is a user or system message container
                 bubble = lv_obj_get_child(obj, 0);
diff --git a/main/display/lvgl_display/gif/gifdec.c b/main/display/lvgl_display/gif/gifdec.c
index 1e74aab..cab83b9 100644
--- a/main/display/lvgl_display/gif/gifdec.c
+++ b/main/display/lvgl_display/gif/gifdec.c
@@ -30,8 +30,8 @@ typedef struct Table {
 
 static gd_GIF  * gif_open(gd_GIF * gif);
 static bool f_gif_open(gd_GIF * gif, const void * path, bool is_file);
-static void f_gif_read(gd_GIF * gif, void * buf, size_t len);
-static int f_gif_seek(gd_GIF * gif, size_t pos, int k);
+static inline void f_gif_read(gd_GIF * gif, void * buf, size_t len);
+static inline int f_gif_seek(gd_GIF * gif, size_t pos, int k);
 static void f_gif_close(gd_GIF * gif);
 
 #if LV_USE_DRAW_SW_ASM == LV_DRAW_SW_ASM_HELIUM
diff --git a/main/idf_component.yml b/main/idf_component.yml
index 970771c..8c636c7 100644
--- a/main/idf_component.yml
+++ b/main/idf_component.yml
@@ -20,21 +20,21 @@ dependencies:
   espressif/esp_lcd_panel_io_additions: ^1.0.1
   78/esp_lcd_nv3023: ~1.0.0
   78/esp-wifi-connect: ~3.0.2
-  espressif/esp_audio_effects: ~1.2.0
-  espressif/esp_audio_codec: ~2.4.0
+  espressif/esp_audio_effects: ~1.2.1
+  espressif/esp_audio_codec: ~2.4.1
   78/esp-ml307: ~3.5.3
   78/uart-eth-modem:
-    version: ~0.1.3
+    version: ~0.2.1
     rules:
     - if: target not in [esp32]
   78/xiaozhi-fonts: ~1.5.5
-  espressif/led_strip: ~3.0.1
-  espressif/esp_codec_dev: ~1.5
-  espressif/esp-sr: ~2.2.0
-  espressif/button: ~4.1.3
+  espressif/led_strip: ~3.0.2
+  espressif/esp_codec_dev: ~1.5.4
+  espressif/esp-sr: ~2.3.0
+  espressif/button: ~4.1.5
   espressif/knob: ^1.0.0
   espressif/esp32-camera:
-    version: ^2.0.15
+    version: ^2.1.4
     rules:
     - if: target in [esp32s3]
   espressif/esp_video:
@@ -51,15 +51,15 @@ dependencies:
   espressif/esp_lcd_touch_gt1151: ^1
   waveshare/esp_lcd_touch_cst9217: ^1.0.3
   espressif/esp_lcd_touch_cst816s: ^1.0.6
-  lvgl/lvgl: ~9.3.0
-  esp_lvgl_port: ~2.6.0
+  lvgl/lvgl: ~9.4.0
+  esp_lvgl_port: ~2.7.0
   espressif/esp_io_expander_tca95xx_16bit: ^2.0.0
   espressif2022/image_player: ^1.1.1
   espressif2022/esp_emote_expression: ^0.1.0
   espressif/adc_mic: ^0.2.1
   espressif/esp_mmap_assets: '>=1.2'
   txp666/otto-emoji-gif-component:
-    version: ^1.0.5
+    version: ^1.1.1
     rules:
     - if: target in [esp32s3]
   espressif/adc_battery_estimation: ^0.2.0
diff --git a/main/ota.cc b/main/ota.cc
index 768ba66..bcc0dc5 100644
--- a/main/ota.cc
+++ b/main/ota.cc
@@ -3,6 +3,8 @@
 #include "settings.h"
 #include "assets/lang_config.h"
 
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
 #include <cJSON.h>
 #include <esp_log.h>
 #include <esp_partition.h>
@@ -10,6 +12,7 @@
 #include <esp_app_format.h>
 #include <esp_efuse.h>
 #include <esp_efuse_table.h>
+#include <esp_heap_caps.h>
 #ifdef SOC_HMAC_SUPPORTED
 #include <esp_hmac.h>
 #endif
@@ -292,19 +295,28 @@ bool Ota::Upgrade(const std::string& firmware_url, std::function<void(int progre
         return false;
     }
 
-    char buffer[512];
+    constexpr size_t PAGE_SIZE = 4096;
+    char* buffer = (char*)heap_caps_malloc(PAGE_SIZE, MALLOC_CAP_INTERNAL);
+    if (buffer == nullptr) {
+        ESP_LOGE(TAG, "Failed to allocate buffer");
+        return false;
+    }
+
+    size_t buffer_offset = 0;  // Current data size in buffer
     size_t total_read = 0, recent_read = 0;
     auto last_calc_time = esp_timer_get_time();
     while (true) {
-        int ret = http->Read(buffer, sizeof(buffer));
+        int ret = http->Read(buffer + buffer_offset, PAGE_SIZE - buffer_offset);
         if (ret < 0) {
             ESP_LOGE(TAG, "Failed to read HTTP data: %s", esp_err_to_name(ret));
+            heap_caps_free(buffer);
             return false;
         }
 
         // Calculate speed and progress every second
         recent_read += ret;
         total_read += ret;
+        buffer_offset += ret;
         if (esp_timer_get_time() - last_calc_time >= 1000000 || ret == 0) {
             size_t progress = total_read * 100 / content_length;
             ESP_LOGI(TAG, "Progress: %u%% (%u/%u), Speed: %uB/s", progress, total_read, content_length, recent_read);
@@ -315,22 +327,16 @@ bool Ota::Upgrade(const std::string& firmware_url, std::function<void(int progre
             recent_read = 0;
         }
 
-        if (ret == 0) {
-            break;
-        }
-
         if (!image_header_checked) {
-            image_header.append(buffer, ret);
+            image_header.append(buffer, buffer_offset);
             if (image_header.size() >= sizeof(esp_image_header_t) + sizeof(esp_image_segment_header_t) + sizeof(esp_app_desc_t)) {
                 esp_app_desc_t new_app_info;
                 memcpy(&new_app_info, image_header.data() + sizeof(esp_image_header_t) + sizeof(esp_image_segment_header_t), sizeof(esp_app_desc_t));
-                
-                auto current_version = esp_app_get_description()->version;
-                ESP_LOGI(TAG, "Current version: %s, New version: %s", current_version, new_app_info.version);
 
                 if (esp_ota_begin(update_partition, OTA_WITH_SEQUENTIAL_WRITES, &update_handle)) {
                     esp_ota_abort(update_handle);
                     ESP_LOGE(TAG, "Failed to begin OTA");
+                    heap_caps_free(buffer);
                     return false;
                 }
 
@@ -338,14 +344,27 @@ bool Ota::Upgrade(const std::string& firmware_url, std::function<void(int progre
                 std::string().swap(image_header);
             }
         }
-        auto err = esp_ota_write(update_handle, buffer, ret);
-        if (err != ESP_OK) {
-            ESP_LOGE(TAG, "Failed to write OTA data: %s", esp_err_to_name(err));
-            esp_ota_abort(update_handle);
-            return false;
+
+        // Write to flash when buffer is full (4KB) or it's the last chunk
+        bool is_last_chunk = (ret == 0);
+        if (buffer_offset == PAGE_SIZE || (is_last_chunk && buffer_offset > 0)) {
+            auto err = esp_ota_write(update_handle, buffer, buffer_offset);
+            if (err != ESP_OK) {
+                ESP_LOGE(TAG, "Failed to write OTA data: %s", esp_err_to_name(err));
+                esp_ota_abort(update_handle);
+                heap_caps_free(buffer);
+                return false;
+            }
+
+            buffer_offset = 0;
+        }
+
+        if (is_last_chunk) {
+            break;
         }
     }
     http->Close();
+    heap_caps_free(buffer);
 
     esp_err_t err = esp_ota_end(update_handle);
     if (err != ESP_OK) {
diff --git a/main/protocols/mqtt_protocol.cc b/main/protocols/mqtt_protocol.cc
index e2dec43..94d9d12 100644
--- a/main/protocols/mqtt_protocol.cc
+++ b/main/protocols/mqtt_protocol.cc
@@ -119,7 +119,8 @@ bool MqttProtocol::StartMqttClient(bool report_error) {
                 auto alive = alive_;  // Capture alive flag
                 Application::GetInstance().Schedule([this, alive]() {
                     if (*alive) {
-                        CloseAudioChannel();
+                        // Server initiated goodbye, don't send goodbye back to avoid ping-pong
+                        CloseAudioChannel(false);
                     }
                 });
             }
@@ -188,17 +189,23 @@ bool MqttProtocol::SendAudio(std::unique_ptr<AudioStreamPacket> packet) {
     return udp_->Send(encrypted) > 0;
 }
 
-void MqttProtocol::CloseAudioChannel() {
+void MqttProtocol::CloseAudioChannel(bool send_goodbye) {
     {
         std::lock_guard<std::mutex> lock(channel_mutex_);
         udp_.reset();
     }
 
-    std::string message = "{";
-    message += "\"session_id\":\"" + session_id_ + "\",";
-    message += "\"type\":\"goodbye\"";
-    message += "}";
-    SendText(message);
+    ESP_LOGI(TAG, "Closing audio channel, send_goodbye: %d", send_goodbye);
+
+    // Only send goodbye when client initiates the close
+    // Don't send if server already sent goodbye (to avoid ping-pong)
+    if (send_goodbye) {
+        std::string message = "{";
+        message += "\"session_id\":\"" + session_id_ + "\",";
+        message += "\"type\":\"goodbye\"";
+        message += "}";
+        SendText(message);
+    }
 
     if (on_audio_channel_closed_ != nullptr) {
         on_audio_channel_closed_();
diff --git a/main/protocols/mqtt_protocol.h b/main/protocols/mqtt_protocol.h
index aadb948..90963db 100644
--- a/main/protocols/mqtt_protocol.h
+++ b/main/protocols/mqtt_protocol.h
@@ -31,7 +31,7 @@ public:
     bool Start() override;
     bool SendAudio(std::unique_ptr<AudioStreamPacket> packet) override;
     bool OpenAudioChannel() override;
-    void CloseAudioChannel() override;
+    void CloseAudioChannel(bool send_goodbye = true) override;
     bool IsAudioChannelOpened() const override;
 
 private:
diff --git a/main/protocols/protocol.h b/main/protocols/protocol.h
index 17ab315..28ef604 100644
--- a/main/protocols/protocol.h
+++ b/main/protocols/protocol.h
@@ -65,7 +65,7 @@ public:
 
     virtual bool Start() = 0;
     virtual bool OpenAudioChannel() = 0;
-    virtual void CloseAudioChannel() = 0;
+    virtual void CloseAudioChannel(bool send_goodbye = true) = 0;
     virtual bool IsAudioChannelOpened() const = 0;
     virtual bool SendAudio(std::unique_ptr<AudioStreamPacket> packet) = 0;
     virtual void SendWakeWordDetected(const std::string& wake_word);
diff --git a/main/protocols/websocket_protocol.cc b/main/protocols/websocket_protocol.cc
index a8f8cf3..f0cc034 100644
--- a/main/protocols/websocket_protocol.cc
+++ b/main/protocols/websocket_protocol.cc
@@ -75,7 +75,8 @@ bool WebsocketProtocol::IsAudioChannelOpened() const {
     return websocket_ != nullptr && websocket_->IsConnected() && !error_occurred_ && !IsTimeout();
 }
 
-void WebsocketProtocol::CloseAudioChannel() {
+void WebsocketProtocol::CloseAudioChannel(bool send_goodbye) {
+    (void)send_goodbye;  // Websocket doesn't need to send goodbye message
     websocket_.reset();
 }
 
diff --git a/main/protocols/websocket_protocol.h b/main/protocols/websocket_protocol.h
index 8c7dd65..48bbc00 100644
--- a/main/protocols/websocket_protocol.h
+++ b/main/protocols/websocket_protocol.h
@@ -18,7 +18,7 @@ public:
     bool Start() override;
     bool SendAudio(std::unique_ptr<AudioStreamPacket> packet) override;
     bool OpenAudioChannel() override;
-    void CloseAudioChannel() override;
+    void CloseAudioChannel(bool send_goodbye = true) override;
     bool IsAudioChannelOpened() const override;
 
 private:
diff --git a/sdkconfig.defaults.esp32s3 b/sdkconfig.defaults.esp32s3
index 761d220..0ac4880 100644
--- a/sdkconfig.defaults.esp32s3
+++ b/sdkconfig.defaults.esp32s3
@@ -7,8 +7,8 @@ CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ_240=y
 CONFIG_SPIRAM=y
 CONFIG_SPIRAM_MODE_OCT=y
 CONFIG_SPIRAM_SPEED_80M=y
-CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=512
-CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=65536
+CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=2048
+CONFIG_SPIRAM_MALLOC_RESERVE_INTERNAL=98304
 CONFIG_SPIRAM_MEMTEST=n
 CONFIG_MBEDTLS_EXTERNAL_MEM_ALLOC=y