diff --git a/threadfunc/thread_func.hpp b/threadfunc/thread_func.hpp
index aa4c5ac..18d2a6b 100644
--- a/threadfunc/thread_func.hpp
+++ b/threadfunc/thread_func.hpp
@@ -32,3 +32,4 @@ void GetCSQ();
 void Dial5G();
 void InitModule();
 void RunLED();
+void RecvUpdateFile();