How to revert a Thing Plus SAMD51 back to Arduino after installing CircuitPython?

I see that Thing Plus SAMD51 supports CircuitPy:

https://circuitpython.org/board/sparkfu … hing_plus/

If I install the CircuitPy, then decide to go back to Arduino, is there an Arduino ???.UF2 to bring it back to what SparkFun ships on it from the factory? Where is the Arduino.UF2 distributed?

Thx! :shock:

I’m especially hoping I don’t have to go through this process:

https://docs.arduino.cc/built-in-exampl … ArduinoISP