HP BIOS unlock tool

[Sidqi Januar Riadi]

First check this site to see if your HP is supported for the great tool Mazzif has made.

http://mazzifsoftware.blogspot.com/p...os-unlock.html

If your model is newer and not in that list, you need to dump your bios, remove password from dump and reprogram bios with modified dump.

For that you need an SPI programmer like CH341A or Raspberry Pi with Flashrom or any other similar programmer. A soic8 clip is also useful so there wouldn't be a need to unsolder bios IC.

When you have your dump, just drag and drop your file on my HPUnlocker tool and it will create a new file. It will add "_unlocked" to the name of your locked file.

Just program the new file on your bios IC.

This unlocker should work on all Elite, EliteBook, ProBook and maybe some other series HP laptops.

For those of you who need to unlock large amounts of laptops, I recommend adding a registry entry:

Computer\HKEY_CLASSES_ROOT\*\shell\HPUnlocker\command

Then modify that string adding

"C:\*location-of-exe*\HPUnlocker.exe" "%1"

This way you just need to right click your locked file and select HPUnlocker.

If there are any issues, please do let me know so I can improve this tool.

All Elitebooks, Probooks and zbooks which are up to ninth generation which should be up to year 2018, like 840 G5, are supported. Newer models are not supported (yet atleast).

No Pavilions or other trash is supported

-----------------------------------------------------------------
NEW multitool and unlocker added .

Unlocking
HP - ProBook, EliteBook, ZBook (including 32MB models)
Chromebooks from all various manufacturers
Apple - everything older than T2
More to come...

RCUnlocker https://www.badcaps.net/forum/showthread.php?t=98539
.

thanks so much brorther ,god bless you

[soniqu]

hi, problem with BIOS Probook HP 450 G6, black screen, need help, SN: 5CD9369GNG

[peste]

Will it work with 840 g5

read post #1..

[Zadiq]

Will it work with 840 g5

[akorede]

https://www.indiafix.in/2025/06/hp-g...wnload-hp.html


might be usefull

[Andreasbest]

I have a strange behavior with unlocked 8440p.
Admin password removed succesfully, i can enter bios with F10 BUT i can't change any setting, whatever i do when i save, exit and enter again BIOS it's not stored, like it's locked on specific settings.
I tried factory defaults, secutiry reset, bios update through Windows but no success.
Seems like the admin password really gone but the permission to make changes in BIOS remained.
Attached is the unlocked file that i flashed.
What do i miss?
SN: CZC13O234X

Thanks in advance!

Can't make MEanalyzer to run, colorama, crccheck etc seems impossible for me to install. Can someone clean ME to try it please?
Thank you!

[Andreasbest]

Try clear ME .
https://www.badcaps.net/forum/troubl...22#post1622422

But it's the original BIOS from this particular machine, i didn't use from another laptop, still need ME cleaning?

[hoaca388]

I have a strange behavior with unlocked 8440p.
Admin password removed succesfully, i can enter bios with F10 BUT i can't change any setting, whatever i do when i save, exit and enter again BIOS it's not stored, like it's locked on specific settings.
I tried factory defaults, secutiry reset, bios update through Windows but no success.
Seems like the admin password really gone but the permission to make changes in BIOS remained.
Attached is the unlocked file that i flashed.
What do i miss?
SN: CZC13O234X

Thanks in advance!

Try clear ME .
https://www.badcaps.net/forum/troubl...22#post1622422

[Andreasbest]

I have a strange behavior with unlocked 8440p.
Admin password removed succesfully, i can enter bios with F10 BUT i can't change any setting, whatever i do when i save, exit and enter again BIOS it's not stored, like it's locked on specific settings.
I tried factory defaults, secutiry reset, bios update through Windows but no success.
Seems like the admin password really gone but the permission to make changes in BIOS remained.
Attached is the unlocked file that i flashed.
What do i miss?
SN: CZC13O234X

Thanks in advance!

[SMDFlea]

programmer backup

[peste]

Could you unlock my BIOS?

HP Zbook g5

SN 5CD9131MFN

post the original contents of the bios chip..

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

you need an SPI programmer...here is a video for example..https://www.youtube.com/watch?v=DWWi...nnel=ThisIsHow

[MchRichelieu24]

Could you unlock my BIOS?

HP Zbook g5

SN 5CD9131MFN

[bod0007]

SMDFlea I do not have CH programmer yet for flashing. The backup I have is previous BIOS done by the official updater.
Will that work? I have read a about the patch you mentioned. Just want to know if you talking about programmer backup or the normal update backup.

[SMDFlea]

Try to reset your bios backup to factory settings then reflash the bios, and at 1st boot press F10 and RESET BIOS to factory defaults https://www.badcaps.net/forum/troubl...y-bios-patcher

[bod0007]

<BIOSCONFIG Version="" Computername="BOD" Date="2025/06/17" Time="18:52:38" UTC="1">
SPM: Not Provisioned.
BEAM mode: Disabled.
<SETTING changeStatus="fail" name="Manufacturing Programming Mode" reason="Access denied" returnCode="6">
<OLDVALUE><![CDATA[Lock]]></OLDVALUE>
<NEWVALUE><![CDATA[Unlock]]></NEWVALUE>
</SETTING>
<ERROR msg="An operation failed" />
<ERROR msg="BCU return value" real="13" translated="13" />
</BIOSCONFIG>

SMDFlea I have tried to unlock mpm with that method serverally. shows this error

[SMDFlea]

Use BCU 4.0 (Bios Config Utility) under cmd.
biosconfigutility /get:1.txt and in 1.txt modify Manufacturing Programming Mode from *Lock to *Unlock (erase *from Lock and put it to Unock) save file as 2.txt and use biosconfigutility /set:2.txt then restart.

[bod0007]

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

do I need to unlock BIOS to correct the DMI details.
Please point me to tutorials for dumping BIOS and restoring or flashing the unlocked BIOS file received from BIOS request.

[bod0007]

Hi all, I have a HP EliteBook 855 G7 with 845 G7 BIOS details(i.e SN and Product number) I tried to correct it with BCD utilities but not work. I read I need to unlock MPM. Kindly help

[peste]

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

[erwer]

Hello,

I am trying to remove the BIOS lock of an HP elitebook 840-G8.

I have all tool & software (CH341A, RCUnlocker, AS-Programmer) available and working.

Since I don't have a suitable soldering station, I try to avoid soldering out the bios chip.

With a Wson-chip adapter, I read out the correct bios chip W25Q128JV on the motherboard, which is tricky.

Nevertheless I managed till now to read out the bios chip 8 times. Unfortinally all bios binaries are different, because of the of different CRC32 on the AS-Programmer. That is not suppriesing me.

Curiously the Unlocker tool works for all the different binaries.

The question is how to find the correct binary? Maybe the security mechanism use only a small memory part of the bios chip and the rest of the memory doesn't matter.

Has somebody experience with the topic, respectively any suggestions?

Br