This unfortunately took me way too long.

I kept running into this problem:

A fatal error occurred: Failed to write to target RAM (result was 01070000: Operation timed out)
Failed uploading: uploading error: exit status 2

 In the end I got past it by using a Linux laptop eg. Ubuntu on my Carbon X1 gen 6.

I was trying to program it on my MBP i7 2015 with Monterey... dumped like 3 hrs into this damn.

But I was able to flash their demo code.

With this I'll be able to read through their code and make my own UI to talk to the RPi.

I have to look into pairing the two with serial that would be ideal vs. just button events via GPIO (eg. high/low)