Update: it's indeed a hardware issue, the clip knocked off the two 33 ohm resistors on the bottom!
I got it to boot with some bodge wires, not ideal but better than dead. I might get a new motherboard later since I ripped some pads and I don't trust the wire, and recycle this one as a server (I wanted one for Home Assistant Voice anyway).
Thanks a lot for all the help!

Sadly nothing changed with any of the two files, thank you anyway...



At this point I'm considering a hardware issue too. Are you aware of any hardware debug interfaces (JTAG, UART, etc) I can use to get an idea?...

Still bricked with no changes 😕...

Hello, I'm having trouble booting my T480s after a BIOS flash. I'm using a Pi Pico 2040 (serprog) with flashprog.
I dumped the stock BIOS three times, the checksum was the same. I added the usual patches, and how the laptop won't turn on: attempting to power on for a second (display powers up, keyboard lights up), power LED blinking three times, fan spins every few seconds.
Reflashing the stock firmware didn't help. I tried reflashing after using me_cleaner on the stock image, still nothing. Tried some BIOS images from around this forum, nothing. I even tried Coreboot, nothing....