diff --git a/firmware/ch32v003fun b/firmware/ch32v003fun
index d458808..648d262 160000
--- a/firmware/ch32v003fun
+++ b/firmware/ch32v003fun
@@ -1 +1 @@
-Subproject commit d458808056391f67fe9f46e238bc0b5e95562741
+Subproject commit 648d262c796ae57aa13077d0bac51554ef64793f