diff --git a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/peripheral_main.c b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/peripheral_main.c
index b7b0179..dac2a87 100644
--- a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/peripheral_main.c
+++ b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/peripheral_main.c
@@ -319,8 +319,15 @@ int main(void)
     PRINT("INIT: storage ok\n");
     offlog_init();
     PRINT("INIT: offlog ok\n");
+    /* ===== 实验: 跳过 snap_init (2026-08-12) =====
+       目的: SPI 序列还原为旧固件(无快照SPI), 区分触发源
+       稳定 → 快照SPI(读/擦/写头)触发; 崩 → offlog_boot本身(旧固件也该崩) */
+#if 0
     snap_init();
     PRINT("INIT: snap ok\n");
+#else
+    PRINT("INIT: snap skipped (offlog-only SPI seq)\n");
+#endif
 
     /* 复位原因: 必须在初始化后立即读 (离复位时刻最近), 并清除标志,
        保证下次上电只反映本次复位原因 (RCC_RSTSCKR, STM32F1/CH32V20x 兼容) */
diff --git a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/storage.c b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/storage.c
index 7c47697..8038b6c 100644
--- a/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/storage.c
+++ b/vd960DBN/BLE/OnlyUpdateApp_Peripheral/APP/storage.c
@@ -114,7 +114,7 @@ void SPI_Flash_Init(void)
     SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
     SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
     SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
-    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_128;
+    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_16;
     SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
     SPI_InitStructure.SPI_CRCPolynomial = 7;
     SPI_Init(SPI1, &SPI_InitStructure);