diff --git a/board/czechlight/clearfog/usb-reflash-factory.sh b/board/czechlight/clearfog/usb-reflash-factory.sh
new file mode 100644
index 0000000..aec77c0
--- /dev/null
+++ b/board/czechlight/clearfog/usb-reflash-factory.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+set -ex
+
+mkdir /tmp/sdcard.image
+mount /mnt/sdcard.img.squashfs /tmp/sdcard.image/
+blkdiscard /dev/mmcblk0
+ddrescue --force /tmp/sdcard.image/sdcard.img /dev/mmcblk0
+echo 0 > /sys/block/mmcblk0boot0/force_ro
+ddrescue --force /mnt/u-boot-spl.kwb /dev/mmcblk0boot0
+echo 1 > /sys/block/mmcblk0boot0/force_ro
+echo 0 > /sys/block/mmcblk0boot1/force_ro
+ddrescue --force /mnt/u-boot-spl.kwb /dev/mmcblk0boot1
+echo 1 > /sys/block/mmcblk0boot1/force_ro
+sync
+echo b > /proc/sysrq-trigger