How to extract and edit a Lenovo Phoenix TDK Bios

[EpicFix]

Hi guys, will anyone be able to check this file to see if I did it correctly.....also can anyone guide me on how to disable the on-board RAM via the bios for Lenovo 15ADA05 laptop

[SMDFlea]

Hi guys, will anyone be able to check this file to see if I did it correctly.....also can anyone guide me on how to disable the on-board RAM via the bios for Lenovo 15ADA05 laptop

Yes it`s ok you did a good job. Try the patcher to disable ram, don`t know if it will work on this model or not - https://www.badcaps.net/forum/troubl...20#post3232220

[ordinateur]

Maybe the packer of my BIOS for Lenovo V15 G3 IAP is different (not TDK) because when I unpacked it I am just getting .FD file which is 24 MB in size. After unpacking .FD file further with CLI extractor I got a bunch of files and folders like:
0 Descriptor region,
1 Padding,
2 Boot partition ,
3 Data partition,
4 Boot partition and inside those folders there are a plenty of small body.bin files. So I am not getting only one .BIN file which should be 16MB in size to further flash it via RT809, all those files and folders properties are less than 10 MB

[SMDFlea]

Maybe the packer of my BIOS for Lenovo V15 G3 IAP is different (not TDK) because when I unpacked it I am just getting .FD file which is 24 MB in size. After unpacking .FD file further with CLI extractor I got a bunch of files and folders like:
0 Descriptor region,
1 Padding,
2 Boot partition ,
3 Data partition,
4 Boot partition and inside those folders there are a plenty of small body.bin files. So I am not getting only one .BIN file which should be 16MB in size to further flash it via RT809, all those files and folders properties are less than 10 MB

It isn`t a phoenix TDK bios, it`s Insyde. Search for the word BIOSIMG in the FD file, the line just below that is the start offset at 1E6BB0. Select block, the start offset as 1E6BB0, 800000 as the length (800000 is 8MB) ,copy that to a new file. The line below that 8MB offset is the start of the 16MB bios, set the first offset, enter 1000000 as length ,copy to a new file , you now have the 8 & 16MB virgin bios.

[ordinateur]

Thanks so much wizard. Seems I am so near in my making my first BIOS extracted from a hidden Lenovo .EXE.
From the screenshot uploaded on Imgur seems everything is OK?





So when I create these 2 new files then I need to also take the DMI infos from the DUMP of my laptop and write only to the 16MB file at addresses:
DMI 42000 - 43FFF
and write that file to the chip?

do I need to make any modification to the 8MB BIOS or write it as such Virgin as extracted from Lenovo .FD file, or it can be bypassed fully and not written at all?

Thanks once again

[SMDFlea]

enter 800000 as the length, not the end offset.

[ordinateur]

Yes done now, I compare the start and the end and of these files that I am extracting from Lenovo .FD file and the dumps from the laptop and they are so identical, I just need to insert DMI infos to the 16MB file and try burning the file to the chip afterwards


thanks

[m1ch43lzm]

Easier method:
Extract the downloaded .exe from Lenovo website with innoextract
https://github.com/dscharrer/innoextract
If you only have the first .exe and nothing else (like the BIOS on 1st post), follow the step on 1st post to extract it

5PCN20WW.exe /ext

Note: On newer BIOSes you'll get to the bios.cap after extracting with innoextract

Once you get to the bios.cap, open it with UEFITool NE A72
https://github.com/LongSoft/UEFITool/releases

Expand the UEFI capsule -> UEFI image -> (GUID) => (another GUID)
You'll see something like this:

Notice the Body size section, it should be the same size as the BIOS region (for Intel, open the BIOS dump with UEFITool), or the dumped BIOS from the chip (for AMD)
Right click on the second GUID (pictured above for reference) -> Extract body, you'll have your BIOS region* (Intel), or the full BIOS ready to flash (AMD), DMI can be added to it later
* On Intel platforms, use UEFITool 0.28 to replace BIOS region on the BIOS dump from flash chip, regular procedure for cleaning ME region applies (if needed)