Dell XPS 13 9310 2-in-1 stuck in factory mode

[ancan]

Hi,

I've got a XPS 13 9310 2-in-1 with what I assumed was a hardware error, but browsing this forum I see that people have gotten the same issue fixed with BIOS modifications.

Symptoms:
- Warning about factory mode at start
- Fans at 100%
- No service tag set, and when I set it in the BIOS it just reverts to blank.
- Shows 8AC6D992 on POST

I'd be grateful if someone had some tips for me. It's a nice machine and it would be a waste not to have it fixed.

Thanks