diff --git a/V1.5/STM32F103_App1/HardWare/CAR/air780e.c b/V1.5/STM32F103_App1/HardWare/CAR/air780e.c
index b24b56e..7b3d37b 100644
--- a/V1.5/STM32F103_App1/HardWare/CAR/air780e.c
+++ b/V1.5/STM32F103_App1/HardWare/CAR/air780e.c
@@ -750,7 +750,7 @@ static void air780e_trigger_ota_body(const char *host, int port, const char *pat
     air780e_mqtt_result_nowait("iot.ota.result.post", ota_id, 1);
     bg_delay(1000);   /* 给模组一点发送时间即复位（权威通知由重启后的 confirm.post 承担） */
     /* 只把固件信息写入 W25Q64，版本号在 APP 确认成功后再写入 EEPROM */
-    W25Q64_OTA_SetNewInfo(new_ver, file_size, crc16, ota_id);
+    W25Q64_OTA_SetNewInfo(new_ver, file_size, crc16);
     reset_log_mark(RSN_OTA_UPDATE);
     bg_delay(100); NVIC_SystemReset();
 }
@@ -777,11 +777,20 @@ int air780e_ota_confirm(void)
         else    log_error("> OTA 确认写入失败(已重试 3 次)");
     }
 
-    /* 重启后的新鲜可靠连接上，先补发 result.post（带平台任务 id，驱动"完成"标志），
-     * 再发 confirm.post（防回滚确认）。下载完成时发的那条 result 在 OTA 会话上不可靠 */
+    /* 重启后的新鲜可靠连接上，先补发 result.post（带平台任务 id，驱动"完成"标志）。
+     * 任务 id 存在 EEPROM(175~194)（下载开始时由网络层写入），发送成功后清回 0xFF */
     int rc = 0;
-    if (info.ota_id[0]) {
-        rc |= NET_mqtt_report("iot.ota.result.post", info.ota_id, 1);
+    {
+        char oid[20];
+        eepromReadData(175, oid, sizeof(oid));
+        if ((uint8_t)oid[0] != 0xFF && oid[0] != 0) {
+            oid[19] = 0;
+            rc |= NET_mqtt_report("iot.ota.result.post", oid, 1);
+            if (rc == 0) {
+                memset(oid, 0xFF, sizeof(oid));
+                eepromWriteData(175, oid, sizeof(oid));   /* 已送达，清除防止重复 */
+            }
+        }
     }
     /* 再向服务器上报"确认成功"（走网络层路由，4G/WiFi 通道均可） */
     char id_buf[24] = {0};
diff --git a/V1.5/STM32F103_App1/HardWare/NETWORK/net_wifi_ota.c b/V1.5/STM32F103_App1/HardWare/NETWORK/net_wifi_ota.c
index ebf29fc..eceb665 100644
--- a/V1.5/STM32F103_App1/HardWare/NETWORK/net_wifi_ota.c
+++ b/V1.5/STM32F103_App1/HardWare/NETWORK/net_wifi_ota.c
@@ -267,7 +267,7 @@ void net_wifi_ota(const char *host, int port, const char *path,
         log_info("*  正在重启进入 BootLoader...        *");
         log_info("**************************************");
         /* 只把固件信息写入 W25Q64，版本号在 APP 确认成功后再写入 EEPROM */
-        W25Q64_OTA_SetNewInfo(new_ver, file_size, crc16, ota_id);
+        W25Q64_OTA_SetNewInfo(new_ver, file_size, crc16);
         reset_log_mark(RSN_OTA_UPDATE);
         bg_delay(100);
         NVIC_SystemReset();
diff --git a/V1.5/STM32F103_App1/HardWare/NETWORK/network.c b/V1.5/STM32F103_App1/HardWare/NETWORK/network.c
index a2d27c8..9f1ddd7 100644
--- a/V1.5/STM32F103_App1/HardWare/NETWORK/network.c
+++ b/V1.5/STM32F103_App1/HardWare/NETWORK/network.c
@@ -52,6 +52,8 @@ static void esp_power(uint8_t on)
 volatile net_ui_phase_t g_net_ui_phase = NET_UI_NONE;
 volatile int g_net_ui_countdown = 0;
 
+#define OTA_ID_EEP_ADDR   175   /* EEPROM 175~194：OTA 平台任务 id（确认后清 0xFF） */
+
 static net_backend_t s_backend = NET_BACKEND_4G;
 
 /* 上次成功联网方式（EEPROM 偏移 130，秤参数占用到 126，避开） */
@@ -451,6 +453,14 @@ void net_dispatch_message(const char *msg)
                     else strncpy(host,p,sizeof(host)-1);
             }}
             log_info("> OTA: %s:%d%s", host, port, path);
+            /* 平台任务 id 存 EEPROM（偏移 175）：重启确认时补发 result.post 用。
+             * 注意：故意不用 W25Q64 OTA 信息结构（它 BL/APP 共享，改结构要重刷 BL，
+             * 现场设备无法远程刷 BL），EEPROM 是 APP 私有的 */
+            if (ota_id[0]) {
+                char id20[20] = {0};
+                strncpy(id20, ota_id, sizeof(id20) - 1);
+                eepromWriteData(OTA_ID_EEP_ADDR, id20, sizeof(id20));
+            }
             /* 两条通道共用 W25Q64 双槽 + CRC + BootLoader 回退体系，仅下载传输不同 */
             if (s_backend == NET_BACKEND_WIFI) {
                 net_wifi_ota(host, port, path, ota_id, new_ver, crc16);
diff --git a/V1.5/STM32F103_App1/HardWare/W25Q64/w25q64.c b/V1.5/STM32F103_App1/HardWare/W25Q64/w25q64.c
index a5df2dd..dffe714 100644
--- a/V1.5/STM32F103_App1/HardWare/W25Q64/w25q64.c
+++ b/V1.5/STM32F103_App1/HardWare/W25Q64/w25q64.c
@@ -312,7 +312,7 @@ int W25Q64_OTA_WriteInfo(const W25Q64_OtaInfo *info)
     return 0;
 }
 
-int W25Q64_OTA_SetNewInfo(uint16_t version, uint32_t size, uint16_t crc16, const char *ota_id)
+int W25Q64_OTA_SetNewInfo(uint16_t version, uint32_t size, uint16_t crc16)
 {
     int ret;
     storage_lock();
@@ -330,8 +330,6 @@ int W25Q64_OTA_SetNewInfo(uint16_t version, uint32_t size, uint16_t crc16, const
     info.boot_trial_count = 0;
     info.app_confirmed = 0;
     info.backup_valid  = 0;    /* 新下载后，下一次更新需要重新备份当前 APP */
-    memset(info.ota_id, 0, sizeof(info.ota_id));
-    if (ota_id) strncpy(info.ota_id, ota_id, sizeof(info.ota_id) - 1);   /* 平台任务 id，重启后补发结果用 */
     ret = W25Q64_OTA_WriteInfo(&info);
     storage_unlock();
     return ret;
diff --git a/V1.5/STM32F103_App1/HardWare/W25Q64/w25q64.h b/V1.5/STM32F103_App1/HardWare/W25Q64/w25q64.h
index b91842c..6163454 100644
--- a/V1.5/STM32F103_App1/HardWare/W25Q64/w25q64.h
+++ b/V1.5/STM32F103_App1/HardWare/W25Q64/w25q64.h
@@ -71,7 +71,6 @@ typedef struct {
     uint16_t backup_crc16;     /* 备份固件 CRC16 */
     uint8_t  backup_valid;     /* 槽 A 备份是否有效 */
     uint8_t  reserved2;
-    char     ota_id[20];       /* 平台 OTA 任务 id（重启后补发 result.post 用） */
     uint16_t checksum;         /* 前面所有字节累加和 */
 } W25Q64_OtaInfo;
 #pragma pack(pop)
@@ -95,7 +94,7 @@ int      W25Q64_Verify(uint32_t addr, const uint8_t *data, uint32_t len);
 /* OTA 专用信息区操作 */
 int      W25Q64_OTA_ReadInfo(W25Q64_OtaInfo *info);
 int      W25Q64_OTA_WriteInfo(const W25Q64_OtaInfo *info);
-int      W25Q64_OTA_SetNewInfo(uint16_t version, uint32_t size, uint16_t crc16, const char *ota_id);
+int      W25Q64_OTA_SetNewInfo(uint16_t version, uint32_t size, uint16_t crc16);
 int      W25Q64_OTA_SetBackupInfo(uint32_t size, uint16_t crc16);
 int      W25Q64_OTA_ClearNew(void);
 int      W25Q64_OTA_SetState(uint8_t state);
diff --git a/V1.5/STM32F103_App1/README.md b/V1.5/STM32F103_App1/README.md
index 05bcb4f..db15203 100644
--- a/V1.5/STM32F103_App1/README.md
+++ b/V1.5/STM32F103_App1/README.md
@@ -328,6 +328,7 @@ W25Q64 澶栭儴 Flash锛�8MB锛夛細
 | 164~171 | 8B | HLW8032 绱鑴夊啿鏁帮紙uint64锛屾瘡鏀� 0.1kWh + 鏂數鍓嶅啓鍏ワ級 |
 | 172 | 1B | 浜у搧妯″紡锛�0=鍥涜矾缁х數鍣�(鏃犵Г)锛�1=绉伴噸鎶曟枡(甯︾Г)锛岀┖鐧芥椂鐢� main.h 瀹忛粯璁ゅ�硷紙钃濈墮 SCALE0/SCALE1 鍒囨崲锛� |
 | 173 | 1B | GPS 瀹氫綅寮�鍏筹細0=鍏筹紝1=寮�锛岀┖鐧芥椂鐢� main.h 瀹忛粯璁ゅ�硷紙钃濈墮 GPS0/GPS1 鍒囨崲锛岄噸鍚敓鏁堬級 |
+| 175~194 | 20B | OTA 骞冲彴浠诲姟 id锛堜笅杞藉紑濮嬫椂鍐欏叆锛岄噸鍚‘璁よˉ鍙� result.post 鎴愬姛鍚庢竻 0xFF锛� |
 | 250 | 1B | 鎺㈡祴瀛楄妭锛堜笂鐢靛啓 0xA5 鍥炶锛岄獙璇� I2C 閫氫俊锛� |
 
 > 娉ㄦ剰锛氭敼 `MqttInfo_Str` 缁撴瀯浣撲細鏀瑰彉涓婅堪鍋忕Щ锛岀Г鍙傛暟锛�120+锛夊拰鑱旂綉鏂瑰紡锛�130锛夊湪
diff --git a/V1.5/STM32F103_BootLoader/HardWare/W25Q64/w25q64.h b/V1.5/STM32F103_BootLoader/HardWare/W25Q64/w25q64.h
index 4082fe8..111e6e6 100644
--- a/V1.5/STM32F103_BootLoader/HardWare/W25Q64/w25q64.h
+++ b/V1.5/STM32F103_BootLoader/HardWare/W25Q64/w25q64.h
@@ -75,7 +75,6 @@ typedef struct {
     uint16_t backup_crc16;     /* 备份固件 CRC16 */
     uint8_t  backup_valid;     /* 槽 A 备份是否有效 */
     uint8_t  reserved2;
-    char     ota_id[20];       /* 平台 OTA 任务 id（重启后补发 result.post 用） */
     uint16_t checksum;         /* 前面所有字节累加和 */
 } W25Q64_OtaInfo;
 #pragma pack(pop)
diff --git a/V1.5/鐗堟湰璇存槑.md b/V1.5/鐗堟湰璇存槑.md
index 364ab19..b12796b 100644
--- a/V1.5/鐗堟湰璇存槑.md
+++ b/V1.5/鐗堟湰璇存槑.md
@@ -159,3 +159,6 @@
   鍦ㄥ彲闈犺繛鎺ヤ笂琛ュ彂 result.post(success=1, 浠诲姟id) + confirm.post鈥斺�斿钩鍙�"瀹屾垚"鏍囧織鍙甯搁棴鐜�
 - 娉ㄦ剰锛歄TA 淇℃伅缁撴瀯鍙樺寲锛孊ootLoader 鐨� w25q64.h 宸插悓姝ワ紝**闇� J-Link 鍒蜂竴娆℃柊 BL**
   锛堟棫 BL 璇讳笉浜嗘柊鏍煎紡锛屼細璁や笉鍑哄緟瀹夎鍥轰欢锛�
+- OTA 闂幆锛堝吋瀹圭増锛夛細鍥為�� W25Q64 缁撴瀯鏀瑰姩锛圔L/APP 鍏变韩缁撴瀯涓嶈兘鍔紝鐜板満鏃犳硶鍒� BL锛夛紝
+  骞冲彴浠诲姟 id 鏀瑰瓨 APP 绉佹湁 EEPROM(175~194)锛屾柊鍥轰欢棣栧惎纭鏃跺湪鍙潬杩炴帴涓婅ˉ鍙�
+  result.post(success=1, 浠诲姟id) + confirm.post锛岄�佽揪鍚庢竻鍥� 0xFF