Thinkpad t480s, completely dead after BIOS flash using CH341A programmer

[what_1282105]

Following this guide (https://www.reddit.com/r/thinkpad/co...g_and_flashing) i re-flashed my t480s BIOS using an external (CH341A) programmer. The flash didnt work, so i reverted back to my BIOS backup successfully. The BIOS in the chip and the BIOS backup file are identical according to windows' file compare. The revert, however, didnt work: the only thing the computer does is flash the power button 3 times when AC power is connected. I've tried unplugging the CMOS battery, holding the reset button and holding down the power button- no signs of life. Is there anything I can do?

[VegaByte]

Hello,
I have the same problem with an x250.
I have successfully patched 3 T450s, but the same thing happened to me with the x250 as you.

I'm trying to find the problem, if I find it, I'll come back to write it.