diff --git a/flash.sh b/flash.sh
--- a/flash.sh
+++ b/flash.sh
@@ -2,3 +2,7 @@
 cd build
 st-flash write main.bin 0x8000000
 cd ..
+
+
+# USB DFU:
+# sudo  dfu-util -a 0 -d 0483:df11 -s 0x08000000:leave -D build/main.bin