diff --git a/build/kiosk-hid.sh b/build/kiosk-hid.sh
new file mode 100755
index 0000000..1af61fe
--- /dev/null
+++ b/build/kiosk-hid.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+mkdir -p workspace/src/kiosk-hid
+cp ../src/kiosk/kiosk-hid.py workspace/src/kiosk-hid/main.py
+cp ../src/kiosk/manifest-hid.py workspace/src/kiosk-hid/manifest.py
+cd workspace
+git clone https://github.com/micropython/micropython.git --branch=master --depth=1
+cd micropython
+make -C ports/rp2 submodules
+make -C mpy-cross
+cd ports/rp2
+make FROZEN_MANIFEST=../../../src/kiosk-hid/manifest.py
+cd ../../../../
+mkdir -p out
+mv workspace/micropython/ports/rp2/build-RPI_PICO/firmware.uf2 out/kiosk-hid.uf2
diff --git a/src/kiosk/kiosk-hid.py b/src/kiosk/kiosk-hid.py
index e36bdab..7ec1558 100644
--- a/src/kiosk/kiosk-hid.py
+++ b/src/kiosk/kiosk-hid.py
@@ -44,7 +44,7 @@ from micropython import const
 from usb.device.hid import HIDInterface
 
 print("PostalPoint(r) Shipping Kiosk Door Controller")
-print("Firmware version 1.2.0")
+print("Firmware version 1.2.1")
 print("USB HID build")
 
 led = Pin(25, Pin.OUT) # Onboard LED
@@ -122,7 +122,11 @@ class USBHIDInterface(HIDInterface):
         )
 
     def on_set_report(self, report_data, _report_id, _report_type):
-        unlockDoor(False)
+        if report_data[1] == 0x50:
+            print("Entering firmware update mode, power cycle to undo. Goodbye for now!")
+            machine.bootloader()
+        else:
+            unlockDoor(False)
 
     def send_data(self, data=None):
         while self.busy():
@@ -175,4 +179,4 @@ try:
 
 except KeyboardInterrupt:                   # trap Ctrl-C input
     terminateThread = True                  # signal second 'background' thread to terminate 
-    exit()
\ No newline at end of file
+    exit()
diff --git a/src/kiosk/manifest-hid.py b/src/kiosk/manifest-hid.py
new file mode 100644
index 0000000..347f237
--- /dev/null
+++ b/src/kiosk/manifest-hid.py
@@ -0,0 +1,4 @@
+# Build manifest for PostalPoint Kiosk Controller (USB HID)
+include("$(MPY_DIR)/ports/rp2/boards/manifest.py")
+require("usb-device-hid")
+module("main.py")