bios password removal guide

[ziggster]

is there any guide on how to edit\remove password from bios dumps ?

thanks

[mcplslg123]

Re: bios password removal guide

google it, you will get a lot of tutorials. However, the easiest option is to replace the bios region with webupdate using uefi tool.

[kodinabeel]

Re: bios password removal guide

please explain in detail

[ziggster]

Re: bios password removal guide

google it, you will get a lot of tutorials. However, the easiest option is to replace the bios region with webupdate using uefi tool.

can u link a good guide?

i didnt really find how to edit the dump it self and remove the password.
only loads of shitty guides on master passwords that never work lol and other specific exploits that may work on certain machines

[mcplslg123]

Re: bios password removal guide

Here is how to do it

01. open pass locked bios in uefi tool.
02.Expand the file and right click on bios region.
03.You will get 2 options, select "extract as is" and it will ask you to save it.
04.Save this file as bios region pass.bin
05.Now download the update file from vendor website and extract it.
06.Check the file size of downloaded file and bios region pass.bin.
07.it has to be exactly same in size(if size, differs then you need to edit the downloaded file in hxd and make it same size by cutting unnecessary data)
08. If file size is same then open uefi tool again and open the bios dump with password.
09.Again go to bios region, right click on it and select "replace as is" option.
10.It will ask for path, browse it to the file downloaded file from web.
11. Select "save file" and you will get a new rom file and its password cleared.

PS: You will loose dmi data in the process which you may need to re-enter. There are several methods to clear password like editing $VSS entries only but this is the easiest option though i myself dont prefer this option.

Hopefully, it will help someone who wants to try it.

[ziggster]

Re: bios password removal guide

thanks u very much!
but can u also explain about the dmi ?
what software to use and how do i know what to re-enter ?

thanks again !

[SMDFlea]

Re: bios password removal guide

thanks u very much!
but can u also explain about the dmi ?
what software to use and how do i know what to re-enter ?

thanks again !

For HP use nbdmifit/wndmifit https://www.badcaps.net/forum/showthread.php?t=69204
Search youtube videos lots of info about it, and just google for others .

[Bark]

Re: bios password removal guide

How do I download the BIOS as a file to open it in uefi tool? I have a BIOS-locked surface pro 4

[wolf3d.exe]

Re: bios password removal guide

Here is how to do it

01. open pass locked bios in uefi tool.
02.Expand the file and right click on bios region.
03.You will get 2 options, select "extract as is" and it will ask you to save it.
04.Save this file as bios region pass.bin
05.Now download the update file from vendor website and extract it.
06.Check the file size of downloaded file and bios region pass.bin.
07.it has to be exactly same in size(if size, differs then you need to edit the downloaded file in hxd and make it same size by cutting unnecessary data)
08. If file size is same then open uefi tool again and open the bios dump with password.
09.Again go to bios region, right click on it and select "replace as is" option.
10.It will ask for path, browse it to the file downloaded file from web.
11. Select "save file" and you will get a new rom file and its password cleared.

PS: You will loose dmi data in the process which you may need to re-enter. There are several methods to clear password like editing $VSS entries only but this is the easiest option though i myself dont prefer this option.

Hopefully, it will help someone who wants to try it.

Thank you for this! Very valuable information here