diff --git a/stm-firmware/shellmatta b/stm-firmware/shellmatta
index ebf65d7..73e8f0a 160000
--- a/stm-firmware/shellmatta
+++ b/stm-firmware/shellmatta
@@ -1 +1 @@
-Subproject commit ebf65d744838a5c7bbf6ddfff6cb4428f012fd97
+Subproject commit 73e8f0af036e6e35cfa696cebf35726bed8ed299