hp 450 g7 password

[Vesko356]

Re: hp 450 g7

Tried with that file ("450-G7-BackupBiosLocked-2021-09-12-03 NEW.zip").
But the following errors showing.

These errors are normal after unlocking, don't panic , log into bios, and reset security settings to default.

[mdasifbd]

Re: hp 450 g7

This errors are normal after unlocking, don't panic , log into bios, and reset security settings to default.

No, Power-On Authentication return back clicking on "Esc" button. It means restore the BIOS from back-up, most probably.

[Vesko356]

Re: hp 450 g7

No, Power-On Authentication return back clicking on "Esc" button. It means restore the BIOS from back-up, most probably.

Both two files 450-G7-Locked-2021-09-11-01 NEW, and 450-G7-BackupBiosLocked-2021-09-12-03 NEW must be written to the corresponding chips simultaneously and then unlocking procedure will be OK. You're trying to flash only one chip at a time and then to test, but it won't work that way.

[Genyi]

Re: hp 450 g7

Hello!

You can give DMMP BIOS (HP ProBook 450 G7 BIOS S71 dump).

On the first and on the second BIOS.

Thanks!

[mdasifbd]

Re: hp 450 g7

Both two files 450-G7-Locked-2021-09-11-01 NEW, and 450-G7-BackupBiosLocked-2021-09-12-03 NEW must be written to the corresponding chips simultaneously and then unlocking procedure will be OK. You're trying to flash only one chip at a time and then to test, but it won't work that way.

You have done excellent job. Again many many thanks for your effort. Now there is no more "Power-On Authentication". Every function running perfectly.

Both Main and Backup BIOS had been re-written as your instruction. I did one more thing, made a BIOS backup on pen-drive from HP's site. Also plug-in at the same time for extra caution.

So HP Probook 450 G7 need to rewrite both BIOS to remove "Power-On Authentication".

Appreciating your effort.
Thank you Brother.


Kind Regards
Asif

[chkintl93]

Re: hp 450 g7

Try & leave feedback:

Hi,

Can you help unlock the bios password of hp 450 g7?

Thank you

[Vesko356]

Re: hp 450 g7

Hi,

Can you help unlock the bios password of hp 450 g7?

Thank you

Upload bios dump from the second chip.

[torrevieja]

Re: hp 450 g7

Hi,

Can you help unlock the Absolute Persistence of hp 450 g7?

[Bsolution]

Re: hp 450 g7

hi,

can you help unlock the absolute persistence of hp 450 g7?

try

[torrevieja]

Re: hp 450 g7

without success

[AmirJane]

Re: hp 450 g7

Can you help unlock the bios password of hp 450 g7?

Thank you

[hoaca388]

Re: hp 450 g7

Can you help unlock the bios password of hp 450 g7?

Thank you

You can do it by yourself

https://www.badcaps.net/forum/showth...ht=rc+unlocker

[NjoyDGM]

Re: hp 450 g7 password

Hello, can you pls help me with password? Don't know why but RCUnlocker doesn't work..

[hoaca388]

Re: hp 450 g7 password

Hello, can you pls help me with password? Don't know why but RCUnlocker doesn't work..

Here

[Fireballcz]

Re: hp 450 g7 password

Hello guys!
I was not succeed with RC unlocker. No video, spinning fan
May I also ask for pass removal or both chips unpassed dump?
Attached dumps of both chips GD and Winbond.
Thanks in advance!

[peste]

Re: hp 450 g7 password

Hello guys!
I was not succeed with RC unlocker. No video, spinning fan
May I also ask for pass removal or both chips unpassed dump?
Attached dumps of both chips GD and Winbond.
Thanks in advance!

remove the bios chip from the motherboard before reading or writing it, don't use the clip because it gives errors..

try..

[NjoyDGM]

Re: hp 450 g7 password

Here

I did exactly the same thing but the password is still there. Can it somehow be recorded on the second EC flash?

[Fireballcz]

Re: hp 450 g7 password

remove the bios chip from the motherboard before reading or writing it, don't use the clip because it gives errors...

Many thanks for your great work and info. Yes I have readed and also programmed both chips in place.
May I ask a question?
I have T56 and I lowered the clk speed to 5 MHz. The chip (both) powering resistance is bigger than 15 kOhms.
I readed both chips TWICE and checked for differences (HEX, CRC). Both saved dumps for both chips were OK. No differences. Is it possible to read twice in place with IDENTICAL errors?
If is this possible, it menas, that also the second chip Winbond W25Q128JV was readed improperly and need fix.
May I ask also for fixing the second one - Winbond, in this case?
Many thanks!

[Fireballcz]

Re: hp 450 g7 password

remove the bios chip from the motherboard before reading or writing it, don't use the clip because it gives errors..
try..

Hi Peste,
Thanks, but no success. The prompt for pass remains the same. So clearing the part of starting with "NvramActiveRegn." (GD125B127D) was not helpful.

So I flashed back original (locked) dumps. Laptop works untouched, as arrived - asking for password. This means, that reading/flashing (with reduced clk) IN PLACE must be 100% OK.

Maybe Im missing something.
Please see attached image and explain, if possible.
There are two chips, both 128Mb (16MB)
- GigaDevice GD25B127D (dump starts with a block of FF values)
- Winbond W25Q128JV (dump starts with various values)
Please:
1) Which of them is the main one?
2) Which of them should be altered by RCUnlocker?
Many thanks for your time.

[hoaca388]

Re: hp 450 g7 password

I did exactly the same thing but the password is still there. Can it somehow be recorded on the second EC flash?

Maybe.