Yeah, I was lucky. My Samsung device is officially supported. As you said, since no one else has had the interest to do it for your Nokia, it’s basically up to you to make it work, since they rely on volunteers.

I wouldn’t begin to know how to take the base ROM and adapt it to a specific device, but I’d imagine any of the frontier LLMs could probably make quick work of it. It might be worth taking a weekend, and spending some tokens on coaching a model through the task?