diff --git a/packages/usb/update-left-firmware.jlink b/packages/usb/update-left-firmware.jlink
new file mode 100644
index 00000000..063076cf
--- /dev/null
+++ b/packages/usb/update-left-firmware.jlink
@@ -0,0 +1,4 @@
+speed 4000
+device MKL03Z32xxx4
+connect
+loadfile uhk-left.srec
diff --git a/packages/usb/update-left-firmware.sh b/packages/usb/update-left-firmware.sh
new file mode 100755
index 00000000..f778b559
--- /dev/null
+++ b/packages/usb/update-left-firmware.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+JLinkExe -If SWD -CommandFile update-left-firmware.jlink