If not in need to build a dedicated app: It works for Android 6.0+. Get Pydroid apps from here. Or get the latest versions on Google Play. In Pydroid, go to Menu->Pip. Install usb4a. Open example.py ...
ms21xx-firmware -h usage: generate.py [-h] [--chip {ms2109,ms2130}] [--output OUTPUT] [--vid VID] [--pid PID] [--firmware-version FIRMWARE_VERSION] [--video VIDEO ...