I developed this with codex and https://github.com/op1hacks/op1repacker
Run python op1_246_to_scale_quant.py op1_246.op1 on a copy of op1_246.op1 downloaded from https://teenage.engineering/downloads/op-1/original
The patcher should verify that op1_246.op1 has the right SHA256, and that the resulting file has the correct SHA256.
The SHA1 of a proper patched firmware should be 9bc61a9684498cda4fa0630a72b698e3845cfd12
Once it's installed you can change scales by holding shift on [2] when you're in the synth on any given instrument and then turning the white or orange knobs.
Don't use this unless you know exactly what you are doing! I take no responsibility whatsoever for any damage that might result from using this software. You will void your OP-1 warranty and in the worst case brick it using custom firmware. Everything you do with this is at your own risk!