My BIOS chip ID is : 25B64CSIG
My laptop schematic says I have W25Q64FV that's taking 3 volts.
I have the CH341A programmer and already made backups of my BIOS using version 1.34 of the CH341A software and also used Colibri just in case, my BIOS chip is 25B64CSIG and I made backups as W25Q64BV, W25Q64FV and GD25Q64 using both tools, I didn't erase anything yet.

Link to stock BIOS from manufacturer: https://download.lenovo.com/consumer/mobiles/4kcn45ww.exe
I'd love if someone with more experience unlocks my laptop's BIOS, the advanced tab is hidden.
I will PM the BIOS files when needed.

Thanks in advance.

Commenting to boost this up, hopefully it catches the attention of the right eyes.

@Lost_N_BIOS
Here is the thread you asked for.

@qattos - Please check BIOS chip ID again, this is not valid ID >> 25B64CSIG
Please read the chip with your eyes, magnifying glass and flashlight may be required. If you can't tell for sure, take an image of it with and without flash, put in zip and upload for me.

I can unlock this BIOS, already have done for a few members on another large thread, but yes, for this particular one you need to use flash programmer.
But, I need to know correct ID, so I can tell you what software to dump chip with, if not already did w/ correct one, and which will write back OK.

I have sent you a private message with the backup files link, my chip ID is GD25B64, with this attached to it CS1G.
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@Lost_N_BIOS - I compared the backups with each other using HxD software and they're all identical, I think that means I made good reads of the chip.

Please read the ID off the chip, or show me image. You've now mentioned two brand of chips, and two ID's, and first one you mentioned is not a valid ID
So, I want to see the BIOS chip please, so we are sure all is done correct, and so write will not fail. All your dumps matching via hex may mean all good, or all invalid, best we know correct chip ID for sure, so writes will not fail.
Once we are sure, I will have you send me a SINGLE BIOS dump file

Zitat von Lost_N_BIOS im Beitrag #4

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@qattos - Please check BIOS chip ID again, this is not valid ID >> 25B64CSIG
Please read the chip with your eyes, magnifying glass and flashlight may be required. If you can't tell for sure, take an image of it with and without flash, put in zip and upload for me.

I can unlock this BIOS, already have done for a few members on another large thread, but yes, for this particular one you need to use flash programmer.
But, I need to know correct ID, so I can tell you what software to dump chip with, if not already did w/ correct one, and which will write back OK.

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@Black Raven - What??? I steal nothing, and your sentence isn't very clear??

Unlocking BIOS menu like this is usually 2-4 bytes to changes, so there is nothing to steal, and those bytes can be changed a few ways usually, so some modders may do one way, or another, but ALL modders would see/edit the same offsets
So if you see same/similar mods done on some BIOS that does not mean someone stole or copied edit, it simply is because this is the only offset you can edit to get desired result, so ANYONE that does the mod would arrive at the same location to unlock the BIOS.

I do all edits myself, some I cannot find where to edit in assembly, thus I tell user I cannot do.

@Lost_N_BIOS - Sorry for making this confusing.
Here's a picture I took of the chip ID, you can see it says something like 25B64CSIG.
https://mega.nz/file/LZtxSQbI#FhNr4CMwem...RK_NARfH73k7OpU

@qattos - This is not Winbond, it's Gigadevice GD25B64CS - Confirmed working with 1.34 and GD25B64 ID << Please use this version and that ID to dump BIOS, if you already have, send me this file ONLY.
I thought wrong ID since I looked up W25B64

@Lost_N_BIOS - I looked for the GD25B64 ID but I didn't find it on 1.34, I found only GD25Q64, should I choose it?

Hmm, yes, I see that now, maybe a typo in my notes!?! Yes, use that ID, and hopefully write is OK and it was just typo in my notes
Send me only that one file.

@Lost_N_BIOS - I will send it to you on PM if it's fine with you.

Zitat von Lost_N_BIOS im Beitrag #8

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@Black Raven - What??? I steal nothing, and your sentence isn't very clear??

Unlocking BIOS menu like this is usually 2-4 bytes to changes, so there is nothing to steal, and those bytes can be changed a few ways usually, so some modders may do one way, or another, but ALL modders would see/edit the same offsets
So if you see same/similar mods done on some BIOS that does not mean someone stole or copied edit, it simply is because this is the only offset you can edit to get desired result, so ANYONE that does the mod would arrive at the same location to unlock the BIOS.

I do all edits myself, some I cannot find where to edit in assembly, thus I tell user I cannot do.

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@Black Raven
Your help is welcome
Dietmar