diff --git a/main/ble/ble.c b/main/ble/ble.c
index 858f342..1a9df8c 100644
--- a/main/ble/ble.c
+++ b/main/ble/ble.c
@@ -258,6 +258,13 @@ static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *par
                         param->update_conn_params.latency,
                         param->update_conn_params.timeout);
             break;
+        case ESP_GAP_BLE_PHY_UPDATE_COMPLETE_EVT:
+            ESP_LOGI(CONN_TAG, "PHY update, status %d, tx_phy %d, rx_phy %d",
+                        param->phy_update.status,
+                        param->phy_update.tx_phy,
+                        param->phy_update.rx_phy);
+            // tx_phy/rx_phy: 1=1M, 2=2M, 3=Coded
+            break;
         default:
             break;
     }
@@ -388,10 +395,26 @@ static void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_
             ESP_LOGI(CONN_TAG, "Connected, conn_id %u, remote "ESP_BD_ADDR_STR"",
                     param->connect.conn_id, ESP_BD_ADDR_HEX(param->connect.remote_bda));
             esp_ble_gap_update_conn_params(&conn_params);
+            // 请求 2M PHY 提升传输速度（对端不支持时自动回退 1M，不影响兼容性）
+            esp_ble_gap_set_preferred_phy(param->connect.remote_bda,
+                ESP_BLE_GAP_NO_PREFER_TRANSMIT_PHY | ESP_BLE_GAP_NO_PREFER_RECEIVE_PHY,
+                ESP_BLE_GAP_PHY_2M_PREF_MASK,
+                ESP_BLE_GAP_PHY_2M_PREF_MASK,
+                ESP_BLE_GAP_PHY_OPTIONS_NO_PREF);
             break;
         case ESP_GATTS_DISCONNECT_EVT:
             ESP_LOGI(CONN_TAG, "Disconnected, remote "ESP_BD_ADDR_STR", reason 0x%02x",
             ESP_BD_ADDR_HEX(param->disconnect.remote_bda), param->disconnect.reason);
+            // 清理未完成的传输，防止内存泄漏
+            if (SendStatus.isSend) {
+                ESP_LOGW(CONN_TAG, "传输中断，已接收 %d/%d 字节",
+                    (int)SendStatus.port, (int)firstMeg.len);
+                SendStatus.isSend = false;
+                SendStatus.port = 0;
+                if (img_data) { free(img_data); img_data = NULL; }
+                if (filepath) { free(filepath); filepath = NULL; }
+                if (file_img) { fclose(file_img); file_img = NULL; }
+            }
             esp_ble_gap_start_advertising(&adv_params);
             break;
         default:
diff --git a/main/pages/pages.c b/main/pages/pages.c
index 121eb38..475746f 100644
--- a/main/pages/pages.c
+++ b/main/pages/pages.c
@@ -1124,15 +1124,15 @@ void pages_cleanup_gif(void) {
 #endif // LV_USE_GIF
 
 // 更新ui_ImgBle控件的图片（支持 JPEG）
-void update_ui_ImgBle(const char *img_name) {
+bool update_ui_ImgBle(const char *img_name) {
     if(!img_name) {
         ESP_LOGE("IMG_UI", "图片名为空");
-        return;
+        return false;
     }
 
     if(!ui_ImgBle) {
         ESP_LOGE("IMG_UI", "ui_ImgBle控件不存在");
-        return;
+        return false;
     }
 
     static uint8_t *ui_img_data = NULL;
@@ -1146,7 +1146,7 @@ void update_ui_ImgBle(const char *img_name) {
     struct stat file_stat;
     if(stat(img_path, &file_stat) != 0) {
         ESP_LOGE("IMG_UI", "文件不存在: %s", img_path);
-        return;
+        return false;
     }
     ESP_LOGI("IMG_UI", "文件大小: %ld 字节", file_stat.st_size);
 
@@ -1170,13 +1170,13 @@ void update_ui_ImgBle(const char *img_name) {
         FILE *gif_file = fopen(img_path, "rb");
         if (!gif_file) {
             ESP_LOGE("IMG_UI", "GIF文件打开失败: %s", img_path);
-            return;
+            return false;
         }
         gif_psram_buf = heap_caps_malloc(file_stat.st_size, MALLOC_CAP_SPIRAM);
         if (!gif_psram_buf) {
             ESP_LOGE("IMG_UI", "PSRAM分配失败: %ld 字节", file_stat.st_size);
             fclose(gif_file);
-            return;
+            return false;
         }
         fread(gif_psram_buf, 1, file_stat.st_size, gif_file);
         fclose(gif_file);
@@ -1187,13 +1187,14 @@ void update_ui_ImgBle(const char *img_name) {
             ESP_LOGE("IMG_UI", "gifdec 打开失败: %s", img_name);
             free(gif_psram_buf);
             gif_psram_buf = NULL;
-            return;
+            return false;
         }
 
         // 启动自定义 GIF 播放器（Palette LUT + 双缓冲流水线）
         gif_player_start();
 
         ESP_LOGI("IMG_UI", "GIF显示启动(优化): %s", img_name);
+        return true;
     } else
 #endif // LV_USE_GIF
     {
@@ -1226,7 +1227,7 @@ void update_ui_ImgBle(const char *img_name) {
 
             if(ui_img_data == NULL) {
                 ESP_LOGE("IMG_UI", "解码数据为空");
-                return;
+                return false;
             }
 
             // 配置图片数据
@@ -1243,11 +1244,14 @@ void update_ui_ImgBle(const char *img_name) {
             lvgl_port_unlock();
 
             ESP_LOGI("IMG_UI", "JPEG图片更新成功: %s", img_name);
+            return true;
         } else {
             ESP_LOGE("IMG_UI", "图片解码失败，错误码: %d", ret);
             ui_img_data = NULL;
+            return false;
         }
     }
+    return false;
 }
 
 
diff --git a/main/ui/screens/ui_ScreenImg.c b/main/ui/screens/ui_ScreenImg.c
index 226ff82..f64d30b 100644
--- a/main/ui/screens/ui_ScreenImg.c
+++ b/main/ui/screens/ui_ScreenImg.c
@@ -9,7 +9,7 @@
 #include "esp_log.h"  // 用于日志输出
 
 extern void init_spiffs_image_list(void);
-extern void update_ui_ImgBle(const char *img_name);
+extern bool update_ui_ImgBle(const char *img_name);
 extern void free_spiffs_image_list(void);
 extern const char* get_next_image(void);
 extern const char* get_prev_image(void);
@@ -127,16 +127,22 @@ lv_indev_wait_release(lv_indev_get_act());
 }
 if ( event_code == LV_EVENT_GESTURE &&  lv_indev_get_gesture_dir(lv_indev_get_act()) == LV_DIR_LEFT  ) {
 lv_indev_wait_release(lv_indev_get_act());
-      const char *next_img = get_next_image();
-      if(next_img) {
-          update_ui_ImgBle(next_img);
+      // 解码失败时自动跳过，最多尝试全部图片避免死循环
+      for(int try = 0; try < 10; try++) {
+          const char *next_img = get_next_image();
+          if(!next_img) break;
+          if(update_ui_ImgBle(next_img)) break;
+          ESP_LOGW("ScreenImg", "跳过无效图片，继续下一张");
       }
 }
 if ( event_code == LV_EVENT_GESTURE &&  lv_indev_get_gesture_dir(lv_indev_get_act()) == LV_DIR_RIGHT  ) {
 lv_indev_wait_release(lv_indev_get_act());
-      const char *prev_img = get_prev_image();
-      if(prev_img) {
-          update_ui_ImgBle(prev_img);
+      // 解码失败时自动跳过，最多尝试全部图片避免死循环
+      for(int try = 0; try < 10; try++) {
+          const char *prev_img = get_prev_image();
+          if(!prev_img) break;
+          if(update_ui_ImgBle(prev_img)) break;
+          ESP_LOGW("ScreenImg", "跳过无效图片，继续上一张");
       }
 }
 }
diff --git a/main/ui/screens/ui_ScreenImg.h b/main/ui/screens/ui_ScreenImg.h
index f2383b4..7db5a07 100644
--- a/main/ui/screens/ui_ScreenImg.h
+++ b/main/ui/screens/ui_ScreenImg.h
@@ -21,7 +21,7 @@ extern lv_obj_t *ui_ImageDel;
 extern lv_obj_t *ui_ImageReturn;
 
 extern void init_spiffs_image_list(void);
-extern void update_ui_ImgBle(const char *img_name);
+extern bool update_ui_ImgBle(const char *img_name);
 extern void free_spiffs_image_list(void);
 extern const char* get_next_image(void);
 extern const char* get_prev_image(void);
diff --git a/sdkconfig b/sdkconfig
index fc356d0..fac0c61 100644
--- a/sdkconfig
+++ b/sdkconfig
@@ -835,7 +835,12 @@ CONFIG_BT_ALLOCATION_FROM_SPIRAM_FIRST=y
 # CONFIG_BT_BLE_ACT_SCAN_REP_ADV_SCAN is not set
 CONFIG_BT_MAX_DEVICE_NAME_LEN=32
 CONFIG_BT_BLE_RPA_TIMEOUT=900
-# CONFIG_BT_BLE_50_FEATURES_SUPPORTED is not set
+CONFIG_BT_BLE_50_FEATURES_SUPPORTED=y
+CONFIG_BT_BLE_50_EXTEND_ADV_EN=y
+CONFIG_BT_BLE_50_PERIODIC_ADV_EN=y
+CONFIG_BT_BLE_50_EXTEND_SCAN_EN=y
+CONFIG_BT_BLE_50_EXTEND_SYNC_EN=y
+CONFIG_BT_BLE_50_DTM_TEST_EN=y
 CONFIG_BT_BLE_42_FEATURES_SUPPORTED=y
 CONFIG_BT_BLE_42_DTM_TEST_EN=y
 CONFIG_BT_BLE_42_ADV_EN=y