Hi thinkpad T420 working dump is attached
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Re: Lenovo Thinkpad T420 bios
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Re: Lenovo Thinkpad T420 bios
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Re: Lenovo Thinkpad T420 bios
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Re: Lenovo Thinkpad T420 bios
Is there a way to edit DMI in t420 on a live system?
Need to change Machine model type , unit serial nr and board serial.
If not then where is it all writen?
All i got from swaping bios chips is diffirent MAC Address.Comment
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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.
- 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
08-12-2025, 03:01 PM -
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... -
Hello everyone,
First, the data in brief:
Manufacturer: Lenovo
Model: ThinkPad L15 G3 21C3-0016GE
motherboard: LG4 LT5 ADL RT UMA MB 8L - 448.0PZ26.0011
IC Bios 1: MX77L25650F
IC Bios 2: MX25L25673G
EC Chip: NPCX997KAABX
So far I've been a silent reader, but now I need your help
I bought a laptop. The seller said the bios was locked. I was looking for a way to remove this ban.
I then got the CH341A and pulled the corresponding files from here https://www.badcaps.net/forum/troubl...evices-and-ele... -
Hi everyone.
I have an engineering sample of a Lenovo ThinkPad X1 Carbon 11th Gen (TYPE 21HM-2FVT05, S/N PF-40G7CD) with an Intel Core i7 1360P (ES – Intel 0000). Since this is an engineering sample, the BIOS had a massive number of various settings. One day, I was experimenting with the BIOS settings and, after saving them, the laptop stopped booting and played a melody after pressing the power button, signaling error code 0002 (Internal bus error), just like in this post: https://www.badcaps.net/forum/troubl...shooting-lapto... -
Serial Number: PF42HXCM
Board Number: NM-D882
P16s Gen 1 (Type 21BT, 21BU) Laptop (ThinkPad) - Type 21BT
Hello, I have a Lenovo ThinkPad P16s Gen1 with a likely corrupted BIOS.
As soon as the power adapter is plugged in, the fan runs at full speed, but nothing else happens. When I search for the original BIOS version with UVPD, I get N3BET61W, but this exact version has been withdrawn by Lenovo.
Unfortunately, I can't find any other original BIOS for this model.
I've already tried creating a new BIOS from version 1.40,...
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