diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index 871eb64af..de9a78f22 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -3178,7 +3178,11 @@ int MachineObject::parse_json(std::string payload, bool key_field_only)
                     }
                     else {
                         if (!printer_type.empty() && connection_type() == "lan")
+                        {
+                            m_full_msg_count++;/* all message package is full at LAN mode*/
                             print_json.load_compatible_settings(printer_type, "");
+                        }
+
                         print_json.diff2all_base_reset(j_pre);
                     }
                 }
diff --git a/src/slic3r/GUI/StatusPanel.cpp b/src/slic3r/GUI/StatusPanel.cpp
index 72a8cf0b9..becdf9d1a 100644
--- a/src/slic3r/GUI/StatusPanel.cpp
+++ b/src/slic3r/GUI/StatusPanel.cpp
@@ -2574,7 +2574,7 @@ bool StatusPanel::is_task_changed(MachineObject* obj)
 
 void StatusPanel::update(MachineObject *obj)
 {
-    if (!obj)
+    if (!obj || !obj->is_info_ready())
     {
         m_nozzle_btn_panel->Disable();
         return;