The efi zip here Firmware Update Utility (SIO) for Windows - ThinkStation P720 - Lenovo Support US...

Hi,
Trying to fix my home server lenovo workstation

Going off of what I found online I've tried it now with a rpi and flashprog and one of those springy clips connected with jumper cables but it just says `No EEPROM/flash device found` the couple times I tried repositioning. Gave up on it after around 10 mins don't want to mess things up further though I suspect I'll have to replace the IC anyway.

There's some SPI_DBG_HD soldering pads nearby but when I tried continuity with a multi meter I only got beeps on the bios chip that's closer not the SIO.

I could try reading with a ch341a that I used for my GPU but it's one of...

Hi, the SIO firmware flash in my lenovo P720 seems to be corrupted, after a reboot POST fails with CPU1 fan failure and all fans set to max, proceeding with booting shows SIO FW no response.

I've tried using the lenovo sio update utility but that fails with "EC Autho Value not Match" when the system reboots for the update. The efi update tools has a S04FW.cap file but it's 256kb which seems too small?

S/N S4PD6489...