Lenovo T580 Bios Lock

Does this board have two BIOS chips? Check to make sure, all those I get “Image Truncated” which I see only with split BIOS and trying to open half the BIOS. And this is only 8MB vs the 16MB FPT dump you sent, so looks like you do have two BIOS chips.
All three backups are hex byte match / same, so that is a good sign they are OK dumps possibly. But, I need to have both chip dumps to verify if it’s backing up properly

I only see one win bound chip.

Show me image of the motherboard then, I will show you which it is, doesn’t have to be winbond.

I think when I use the ch341A programmer to read I didnt change the 8MByte/16Mbit to 16MByte/128bit. I am getting 3 new dumps now.

That could be possibly problem too maybe!? But, I’ve never seen it possible to choose chip size with CH341A, only chip ID/detect etc I just checked too, choosing BIOS size is not an option.
If you choose wrong chip ID, then yes, it would be problem if you choose smaller chip ID. Use Detect BIOS, then pick correct ID

https://www.dropbox.com/s/nhe4k7stjr797w…004317.jpg?dl=0
On V 1.31 it has a drop down box

Here are new dumps
https://www.dropbox.com/s/xsgt9ei1q1nmmwh/Backups.7z?dl=0
@Lost_N_BIOS

1.31 sucks, hate it! Use 1.30 or 1.34 I see what you mean now

I compared, all those backups match each other. So keep one, rest you can toss. They look very similar to FPT backup too, only it’s missing some of the ME area, or ME area has changed between then and now.
Give me some time and I will rebuild you BIOS to test and see if it will remove the password or not.

Ok thanks.

@eknsibby - I think copying over system details may bring back in the password? So first test will be without NVRAM, well stock NVRAM contents only, due to this it may not boot since stock is mainly empty, but we should test this way first.
LAN MAC ID will be kept, serial or UUID will be missing. Test NV26 first, then if no boot, try NVH27 >> http://s000.tinyupload.com/index.php?fil…665046315251792
After flash, shut down, clear CMOS with CMOS battery removed if you can, by unplugging power supply and remove CMOS battery if possible, then press and hold the power on button for around a minute. Then put it all back, boot to BIOS and load optimal defaults, reboot and see if pass still present

If those work, and password is gone, great but we’ll need to finish with further BIOS mod to put back in your details… To do that please run these commands and give me the output, so I can try to find their exact location in the BIOS.

wmic csproduct get uuid
wmic baseboard get serialnumber

Also, do you know the password now? If yes, tell me what it is too with the above info

@Lost_N_BIOS so I tried flashing both files and password is still there. Also I do not know the password. The password was written in a password keeper application and I lost all files so I no longer know the password.

Not sure if it matters but I guess it is a Supervisor password.

And you did that with programmer correct? If yes, did you erase first, then blank check, then write/verify? And did you clear CMOS before powering on again?

If yes, then password is not stored in BIOS chip

I think I got it right. I erased but didnt blank check. I DOd clear CMOS agter writing. I will try again today

@Lost_N_BIOS so I erased chip, did blank check then wrote the file to chip and verified and i then I pulled power and held the power button for a minute. Booted and still has password. I disconnected the CMOS battery before reading and writing chip.

@eknsibby - Please test this BIOS now instead then, this has only stock/empty NVRAM and stock EC dropped back in - may fail to boot due to the NVRAM empty, but this is only way to check if password is stored in NVRAM without a dump from system without password.
Unless you have two of these systems, and one does not have password? If yes, send dump from other. If this boots, but fails to remove password, then password is not kept in BIOS chip, since this is nearly 100% stock (except FD, ME, and GbE and passwords are never stored there that I’ve ever seen)
http://s000.tinyupload.com/index.php?fil…429294078974998

@Lost_N_BIOS It booted up and asks for a password but this time next to the lock icon there is a person on the left of the lock icon

A person!?!?! In the BIOS?? What’s that mean? Anyway, this means the password is stored in some other chip on the board Dump them all, maybe we can find, but doubtful since it’s probably encrypted so we wouldn’t recognize it, but we can check.

You mentioning a person, are you sure this is in the BIOS, a BIOS password, or are you at a windows login screen?

https://www.dropbox.com/s/ysmui3zzbw56z2…233820.jpg?dl=0
https://www.dropbox.com/s/c5i0ptk6wf0765…232642.jpg?dl=0

Here are some pics I took that I get when it booted up
@Lost_N_BIOS

It asks for password after the lenovo splash screen. You press Enter then F1 and it asks for password before you can make any changes to bios.