No, it says my ESP32 is not supported. I'd love to get it to run there, though.

"it says" - where did you find info on HW support? Or did you try to build and flash the thing yourself?

Yeah I tried to flash and the online flasher refused.

Thx. Perhaps have another try with https://pypi.org/project/esptool/ .

I will, it might just be the flashing parameters that are wrong.