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Summary of BIOS Whitelist Removal Problem


Problem:
I am attempting to remove the WWAN card whitelist from my Lenovo ThinkPad T560.
Initial Findings:

• My current BIOS version is N1KET58W (1.45).
• I have a CH341A programmer and have successfully created two full backups of my BIOS.
• I have the ability to use command-line tools on a Linux machine.

Troubleshooting Steps & Conclusions:

• I attempted to use several automated and manual patching methods on my N1KET58W (1.45) BIOS, including using hex strings. These attempts all failed.
• I concluded that the

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Need Clean BIOS/EC Bin File for Lenovo ThinkPad Yoga 11e - Stuck with 0275 Error CMS

Hello everyone,

I am attempting a repair on a Lenovo ThinkPad Yoga 11e that is currently stuck at boot with the error: "0275 error CMS" even after setup new bios battery and will not allow me to enter the BIOS/Setup.

This is a critical issue that I believe requires flashing the BIOS chip directly using a programmer (e.g., CH341A/RT809H), as standard software updates or resets are not possible.

I have opened the laptop and identified the main BIOS chip...

Hey! I have a T495 with BIOS password... I tried the LPC bus shorting BUT I haven't been able to get it to work (tamper error, asking for password, various errors): I guess I have now tried thousand times...

Hence... Here is its BIOS dump: anyone willing to check/help??? MANY THANKS!

Model: Thinkpad T495
Motherboard: NM-C131
Serial Number: PF-1TG5RR...

hello friends - I have purchased a used Thinkpad X13 Gen 3 AMD variant and only after making the purchase I realised that the BIOS is locked. I have spent a bit of time browsing the forum and from what I understand it's possible the modify the BIOS that is currently on the machine and remove the password from that BIOS. For dumping the BIOS from the laptop I have ordered this ch341a programmer. Below is a photo of the password prompt:


I have taken the cover off the laptop and I found that "serial number" is "GM-0358MB" and "type number" is "21CN-S19U00"....

This specification for the Lenovo ThinkPad T495 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the T495 boardview and T495 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo ThinkPad...