diff --git a/DeployDevice/src/func/liteOsUpgrade/liteOsUpgrade_RK3568_app.py b/DeployDevice/src/func/liteOsUpgrade/liteOsUpgrade_RK3568_app.py
index 6a576932..0be91a29 100644
--- a/DeployDevice/src/func/liteOsUpgrade/liteOsUpgrade_RK3568_app.py
+++ b/DeployDevice/src/func/liteOsUpgrade/liteOsUpgrade_RK3568_app.py
@@ -187,7 +187,7 @@ class liteOsUpgrade_RK3568(BaseApp):
                         reboot_devices_cmd = "%s -s %s RD" % (loader_tool_path, LocationID)
                         reboot_result = sendCmd(reboot_devices_cmd)
                         logger.info(reboot_result)
-                        time.sleep(40)
+                        time.sleep(50)
                         # try:
                         #     if upgrade_test_type != "mini_system_test":
                         #         if not start_cmd(sn):