If you're wondering what this is:
- Add a power quirk for Framework systems
It's to do with the fact that Framework laptops report themselves as discharging when they're actually fully charged, and BIOS updates aren't allowed when discharging.
But to answer your question, I've been using it with my Framework 13 AMD, and haven't had any issues. Fwupd is officially supported by Framework themselves, and is mentioned on the BIOS upgrade guides.
Idk about the UK, but in Australia if you're only sending a small amount of data, some carriers offer IoT plans starting at ~$1/month. So maybe some carriers do the same in the UK?