diff --git a/stm32/Q1-Makefile b/stm32/Q1-Makefile
index 6fd97ee0..d05d7126 100644
--- a/stm32/Q1-Makefile
+++ b/stm32/Q1-Makefile
@@ -29,11 +29,15 @@ dfu-up: dev.dfu
 up2: dev.dfu
 	$(PYTHON_DO_DFU) -u dev.dfu
 
-# Super fast, assumes Coldcard already attached and unlock on this Mac.
+# Super fast, assumes Coldcard already attached and unlocked on this Mac.
 up: dev.dfu
 	cp dev.dfu /Volumes/COLDCARD/.
 	diskutil eject /Volumes/COLDCARD
 
+# Slowest DFU, but easier w/ stock tools
+dfu-slow: dev.dfu
+	dfu-util -d 0483:df11 -a 0 -D $< -R
+
 # Fairly fast, assumes openocd already running, and its current directory is here.
 ocp-up: dev.dfu
 	echo "load_image dev.dfu $(FIRMWARE_BASE) bin; reset run" | nc localhost 4444