HP EliteBook 845 G7 BIOS Pass

[Verlengsnoer]

Re: HP Elitebook 845 G7 Unlock needed

☟

works, thanks

[Vesko356]

Re: HP Elitebook 845 G7 Unlock needed

hi,

i have a bios password protected hp laptop, but cant get ik to unlock.
Backupped the both bios chips,

both chips are 256 (32 mb)

hope someone can help

greetz

☟

[Verlengsnoer]

HP Elitebook 845 G7 Unlock needed

Hi,

i have a bios password protected hp laptop, but cant get ik to unlock.
backupped the both bios chips,

both chips are 256 (32 mb)

hope someone can help

greetz

[SMDFlea]

Re: HP EliteBook 845 G7 BIOS Pass

My laptop is taken apart for half a year gathering dust, still locked.

Wipe the dust off and try this bios,flash it only to the bottom one. Set bios defaults as soon as it boots

[sh4rp]

Re: HP EliteBook 845 G7 BIOS Pass

My laptop is taken apart for half a year gathering dust, still locked.

[peste]

Re: HP EliteBook 845 G7 BIOS Pass

How did this story end?

It ended like this ... successful operation, dead patient ...

[donskogvito]

Re: HP EliteBook 845 G7 BIOS Pass

How did this story end?

[pnilip]

Re: HP EliteBook 845 G7 BIOS Pass

@pnilip try this one not the file from yesterday

no file attached

[LenBios]

Re: HP EliteBook 845 G7 BIOS Pass

@pnilip try this one not the file from yesterday

[LenBios]

Re: HP EliteBook 845 G7 BIOS Pass

@pnilip try this please

[pnilip]

Re: HP EliteBook 845 G7 BIOS Pass

the bios has been updated ..can you change something in the bios ???

i cant access bios. see last picture in my last post. still asking for password.
but usb boot was disabled on original bios. now it works.

[peste]

Re: HP EliteBook 845 G7 BIOS Pass

the bios has been updated ..can you change something in the bios ???

[pnilip]

Re: HP EliteBook 845 G7 BIOS Pass

replace only this bios ... the other one remains the same ..

thanks again for having a try. i again only flashed your modified bin file to the bottom chip (U367).

this time something happened. took some time the fan went to full speed and it showed:



after some time showed:



i pressed ok, it restarted, showed:



when trying to enter bios, still shows:



any ideas?


//edit:
i noticed that now i could boot from usb stick. maybe a chance to install clean bios via usb hp update?

[peste]

Re: HP EliteBook 845 G7 BIOS Pass

many thx for trying but still asking for password

replace only this bios ... the other one remains the same ..

[pnilip]

Re: HP EliteBook 845 G7 BIOS Pass

try this..modify only this bios ... the other one stays the same ..

many thx for trying but still asking for password

[peste]

Re: HP EliteBook 845 G7 BIOS Pass

hello again. today i finally managed to read both chips properly.

at first i tried to read and create backups without desoldering the chips with a selfmade probe made out of wires and pogo pins. but with no luck. everytime different results when comparing the backups. reason was that i´m a bit afraid of destroying the board/chips when de- and resoldering the chips over and over again. hope that someone can remove password from attached files and it works on first try.

so because of my flop with selfmade tool, i ordered a wson8 connector, desoldered both chips with hotair. and created 3 backups from each chip and compared the backups with a hexeditor. this time everthing went well.

@RethoricalCheese: can you please have a look at the files attached and customize/remove pass for me?

hopefully the long waiting times for my orders and the money spent will be worthwhile

thanks in advance

try this..modify only this bios ... the other one stays the same ..

[pnilip]

Re: HP EliteBook 845 G7 BIOS Pass

@pnilip

I think it doesn't really matter which actual chip it is. But so far I have been unable to fix it. I tried multiple times to flash it with different flashes and some ppl were tinkering with the source code to fix it. But no luck. It's a bit frustrating, and you have to solder, desolder the chips plug all the cables back so on.

After looking through the code I found some account details on the U367(top) chip ie. my name that shows on the lock screen in the actual code. So I suppose the U367(top) chip is more important.

hello again. today i finally managed to read both chips properly.

at first i tried to read and create backups without desoldering the chips with a selfmade probe made out of wires and pogo pins. but with no luck. everytime different results when comparing the backups. reason was that i´m a bit afraid of destroying the board/chips when de- and resoldering the chips over and over again. hope that someone can remove password from attached files and it works on first try.

so because of my flop with selfmade tool, i ordered a wson8 connector, desoldered both chips with hotair. and created 3 backups from each chip and compared the backups with a hexeditor. this time everthing went well.

@RethoricalCheese: can you please have a look at the files attached and customize/remove pass for me?

hopefully the long waiting times for my orders and the money spent will be worthwhile

thanks in advance

[sh4rp]

Re: HP EliteBook 845 G7 BIOS Pass

@pnilip

I think it doesn't really matter which actual chip it is. But so far I have been unable to fix it. I tried multiple times to flash it with different flashes and some ppl were tinkering with the source code to fix it. But no luck. It's a bit frustrating, and you have to solder, desolder the chips plug all the cables back so on.

After looking through the code I found some account details on the U367(top) chip ie. my name that shows on the lock screen in the actual code. So I suppose the U367(top) chip is more important.

[pnilip]

Re: HP EliteBook 845 G7 BIOS Pass

pnilip:

The other chip is on the other (bottom) side of the board - directly under the Winbond (in your case... for some reason I had the Winbond on the bottom...).

So you have to disconnect all the wires and remove the screws. Also I didn't unscrew the cpu fan so I don't have to mess with thermal paste.

@sharp
Thanks for your answer and sorry for the late reply, but i didnot have much time past weeks.

Having the second chip on the lower side of the board, i read on threads about other models but because of no time i wasn´t able to have a look at. today i took the time and unscrewed the board.

But as you can see on the pictures added, i have two winbonds (both 256Mbit) on my board. So how do you know that the MX25L25673G was the right one to chose on your board???

Can anybody of the pros tell me if i should now just order a TL866II PLUS, create dumps of each chip and post them here? or am i doing sth wrong??

Upperside:


Lowerside:

[peste]

Re: HP EliteBook 845 G7 (8VZ07AV) Power-on password

Thx for the suggestion, unfortunatelly the pc won't boot in this setting...

replace both contents of the bios chips with the same update on the site.