There are several threads on requesting BIOS modifications here on T | I but I thought another one wouldn't hurt.
Your request should look like:
Brand
Model
Type of modification(For example: Unlocked, added support, Logo, microcode, ME firmware etc
I'll respond as soon as I have time as I'm also currently working on other projects(Requests by PM is also ok)
If anyone else have the knowledge and time feel free to respond to requests