diff --git a/system.html b/system.html
index b078101..44bd0a0 100644
--- a/system.html
+++ b/system.html
@@ -219,8 +219,14 @@
                                             type: "GET",
                                             url: url,
                                             success: function (res) {
-                                                alert('upgrade success!device reboot!')
-                                                window.location.reload(true)
+                                                if (res.success) {
+                                                    alert('upgrade success!device reboot!')
+                                                    window.location.reload(true)
+                                                }
+                                                else {
+                                                    alert('upgrade failed!upgrade pack invalid!')
+                                                    window.location.reload(true)
+                                                }
                                             },
                                             error: function () {
                                                 alert('upgrade failed!upgrade pack invalid!')