Re: BIOS Backup / extract 16MB .bin - Lenovo ThinkBook 13s G3 ACN - 20YA0005GE



Thank you Mazoot, lets see what a comparision between my version and your version brings up.

In the meantime I have set MTM, S/N and so on using Lenovo U1 golden key (available on github). I also backed up all my personal files and did a clean install of Windows 10 (which i wanted to do anyway..). The install process worked fine with the windows key i extracted from my backup.bin .

Fingerprint reader works again after the fresh install of windows.
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Re: BIOS Backup / extract 16MB .bin - Lenovo ThinkBook 13s G3 ACN - 20YA0005GE

For everyone else i'd like to attach the clean bios bin that i extracted and edited. Remember, this bios is made for ThinkBook 13s G3 ACN ....

Re: BIOS Backup / extract 16MB .bin - Lenovo ThinkBook 13s G3 ACN - 20YA0005GE

Thank you for your kind offer SMDFlea!

Edit: I removed the encrypted zip I posted because it violates the forum rules to post encrypted archives. Sorry

Re: BIOS Backup / extract 16MB .bin - Lenovo ThinkBook 13s G3 ACN - 20YA0005GE



Before flashing my new bios bin i thought i might check if something was left on the bios chip. To my surprise only the first 8Mbit of the chip had been erased through my first attempt. So I did a second dump of the chip and this file had 16MByte of data with the first MByte overwritten with FF. So i just had to merge both the first dump (1MByte) with the second dump in HxD hex editor and now i have a complete dump of my bricked bios chip....

Re: BIOS Backup / extract 16MB .bin - Lenovo ThinkBook 13s G3 ACN - 20YA0005GE

I used SMDFleas [URL="https://www.badcaps.net/forum/showthread.php?t=80861"]guide about how to extract Phoenix TDK bios.[/URL]

The BIOS on my Thinkbook is a 16MB large file, so i had to adopt the process in the Hex editor in order to make it work. I read the old bricked bios bin with a CH341a programmer.

1.) extract cap file from Lenovo BIOS exe installer like described above

2.) open cap file in HxD hex editor, select area to cut (strg+e). Set...

Re: How to extract and edit a Lenovo Phoenix TDK Bios

SMDFlea, thank you for this guide! It helped me to extract a BIOS bin file for my Thinkbook 13s G3 ACN that got bricked due to a failed BIOS update. The BIOS on my Thinkbook is a 16MB large file, so i had to adopt the process in the Hex editor in order to make it work. I read the old bricked bios bin with a CH341a programmer.

As a noob i found this forum post through google. I will leave some notes for other noobs, hope that it helps someone to unbrick their device after failed bios flash.

1.) extract...

Re: BIOS Backup / extract 16MB .bin - Lenovo ThinkBook 13s G3 ACN - 20YA0005GE

Solved, will post details tomorrow! System up and running again

Recently I used the official Lenovo bios updater software on my ThinkBook 13s G3 ACN (20YA0005GE). The updating process failed and I got a black screen after powering the device. Of course I did not make an own backup before using the Lenovo bios updater.

I bought a CH341A programmer and was able to make a connection to the chip while it is still soldered on board. But I did not realise that the chip was a 16MB size and selected the wrong size (8Mbit / 1 MByte) before reading the content of my chip. So the dump I did before erasing the chip is only 1MByte big. I fear that I lost...

Re: New Members - please post your introductions here

Thanks for accepting me, I am a bicycle mechanic who tries to repair everything. I help my friends when they have problems with their computer hardware or software. My IT skills are not the best. Right now I am stuck with problems with the Bios of my Thinkbook laptop, that's why I registered here.