Hi everyone! I found this site while researching how to fix a broken Thunderbolt 3 port on an otherwise working X1 Carbon Gen 7 laptop. I bought it for a steal (the seller said it had a bad motherboard; now I see why). I've been researching how to fix this and going deeper and deeper down the BIOS flashing rabbit hole.

I plan on doing a fair amount of BIOS flashing as I might also flash Libreboot on a T480 I bought at around the same time. In short, I'm very interested in learning more about external BIOS flashing.

I also develop my own custom electronics and am certain...