diff --git a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c
index bbf4c0c..8429e31 100644
--- a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c
+++ b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/ch32v20x_it.c
@@ -59,6 +59,11 @@ void fault_diag_init(void)
               (unsigned long)g_fault_diag.mepc,
               (unsigned long)g_fault_diag.mtval,
               (unsigned long)g_fault_diag.marker);
+    } else if (g_fault_diag.marker != 0) {
+        /* 非 HardFault 复位 (IWDG 超时/卡死/掉电): marker 仍记录执行轨迹 */
+        PRINT("FAULT_DIAG: no-hardfault boot_cnt=%lu marker=0x%08lx (卡死/看门狗复位)\n",
+              (unsigned long)g_fault_diag.boot_cnt,
+              (unsigned long)g_fault_diag.marker);
     }
     /* 重置现场, boot_cnt 保留递增 */
     g_fault_diag.magic   = 0;