I finally have time to update the thread. I had done similar steps before I even saw your post, and I actually had the same results.[LIST=1][*]Try flashing another bios (4MB) from the forum, did not change the behavior.[*]Try flashing the 8MB chip with the 20AN GLET68WW file, laptop came back to life.[*]Reboot many times, some beeps to begin with, until eventually nothing but a working laptop.[*]Flash back the original bios on the 4MB chip, still working.[*]Attempt to core boot with skulls, still working, and no alerts from the bios WIFI whitelist even when using the AX210.[/LIST]I came to the...

I'm not sure... Next week I will look around the forum and try some bios and see if the behavior changes. I will report back.

You only need to patch the 4MB chip if you want to keep the bios and remove the whitelist.
Coreboot replaces the bios and you need to replace both the 4MB and 8MB chip content.
I'm trying to give as much information as possible to get help, but I don't think the 8MB is the problem.
From what I understand, the bios is on the 4MB and I believe it got corrupted somehow.

Small update.

i have been playing around with the laptop, trying to setup coreboot to see if it might just fix it somehow. That meant I had to read the 8MB chip and combine both binaries into a rom file.
Using ifdtool, I tried validating and modifying the files, but it keeps returning various errors. It really looks like the bios is corrupted.

I have attached both files in this new zip attachments (4MB and 8MB).

Can anyone confirm if they are corrupted or not? Is it possible to repair it or generate a new bios from scratch using the information I provided?...

As per the the rules, here are the specifications of my laptop :[LIST][*]Make and model number : Thinkpad T440P[*]Serial number (S/N) : PB-03A7V7[*]Model type - Model (MTM) : 20AW-S2N800[*]Bios version : 2.50 [B](not 100% sure, that's what I remember)[/B][/LIST]Here is the problem, and the events leading to it :[LIST=1][*]Upgrade screen, keyboard, trackpad, RAM and CPU[*]Reboot and use the laptop for a bit : everything is working fine[*]Shutdown (no power) and upgrade WIFI with unsupported chip (AX210)[*]Boot up the device : bios warning, as expected[*]Shutdown the device again (no power)[*]Connect...

I'm Mike. Just looking for answers after failing to remove the WIFI whitelist from my T440P.