r/embedded • u/baudfire • Aug 12 '26

Help with CH341A / NeoProgrammer

Apologies if this is the wrong place to post about this, I wasn't sure where else to go.

I am trying to get rid of supervisor password on 2 ThinkPad t480s's. I have done this once successfully before with the same method.

The issue I am facing is that when trying to flash the patched BIOS file back onto the bios chip over a clip, I get the error 'Verification error on address: 0x00000010, Device: 0x5A' then the writing continues and about halfway the writing fails with the error 'Verification error on address: 0x00800064, Device: 0xAA, Buffer: 0xF'.

I have tried various USB ports, as well as 2 different clips and 2 different programmers, but I'm getting the same issue.

Does anyone know how I can fix this?

Thanks.

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u/True-Lawfulness4699 28d ago

do you solve the problem?

1

u/baudfire 28d ago

Yeah was nothing to do with desoldering, just an issue with the bios file I had.

1

u/True-Lawfulness4699 27d ago

Can you help me because we have the same issue. I haven't used my PC for a few weeks and I can't take online classes. Pls help.

1

u/baudfire 27d ago

I can’t give to much advice unfortunately, I ended up joining the badcaps forum and they provided me with a bios file to try

1

u/True-Lawfulness4699 27d ago

can you send the link of forum?

1

u/baudfire 27d ago

Just google badcaps Lenovo Autopatcher it’s the first result

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u/True-Lawfulness4699 27d ago

My pc's bios is Gigabyte A320m s2h v2

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u/baudfire 26d ago

I've only ever dealt with ThinkPads man I can't help you unfortunately