diff --git a/stm-firmware/shellmatta b/stm-firmware/shellmatta
index 4dc6cd1..48fcf05 160000
--- a/stm-firmware/shellmatta
+++ b/stm-firmware/shellmatta
@@ -1 +1 @@
-Subproject commit 4dc6cd1e79be4fed928443b91de70699773f7084
+Subproject commit 48fcf05b7d54acc03368c90ad8cf437f302f3346