RCUnlocker

[KillerDAN]

Re: RCUnlocker

Well found myself doing poor life choices and getting a BIOS locked HP 640 G4... because I currently do not have and EEPROM reader/ programmer (already ordered one) and find myself terrified for unsoldering it, and I have electronics background still, tried killing of time and managed to extract the EEPROM with a tool found on Major Geeks, BIOS Backup ToolKit V2.0 to "fool around" with RCUnlocker.
Well RCUnlocker seems to work the file fine, in the end the splash screen display correctly the information for the machine.
Went comparing the two files and seem legit, the original one after defaultuser 0 has a string S-1-5-21-150966 1523-1617159028-940737068-1001.
Apologies in advance if being too ignorant, mas can this string be "reversed" to find the password and/ or, If I could read it... can't I write ? I do have admin privileges on current running OS still if all the HP tools refuse do delete/ change the password.
Would be definitely more easy, and safe, to go popping up the IC.

[va.vladimir]

Re: RCUnlocker

I have HP Elitebook 440 G8, locked BIOS. Help me please

[va.vladimir]

Re: RCUnlocker

I have HP Elitebook 440 G8, locked BIOS. Help me please

I'm sorry HP ProBook 440
g8

[Bravetech]

Re: RCUnlocker

hello, firstly i appreciate your effort on developing this tool but the tool has stopped working i downloaded it yesterday to unlock a dump after that it stopped working, i thought it was from my OS i reinstall a OS same thing.it keep showing application error and other apps is installing on my pc except the RCUNLOCKER, please any solution to this problem thanks in anticipation.

[hoaca388]

Re: RCUnlocker

I have HP Elitebook 440 G8, locked BIOS. Help me please

DDDDDDDd

[va.vladimir]

Re: RCUnlocker

DDDDDDDd

Thank you very much!!!

[SMDFlea]

Re: RCUnlocker

Thank you very much!!!

In future you must try the available software unlocking tools yourself before asking for help - https://www.badcaps.net/forum/showthread.php?t=103570

.

[va.vladimir]

Re: RCUnlocker

In future you must try the available software unlocking tools yourself before asking for help - https://www.badcaps.net/forum/showthread.php?t=103570

.

This is the 11th generation, these programs will not unlock it, I tried it. That's why I asked for help. The password has been removed, thank you! But now there is a new problem when loading and displays the message with hp endpoint security problem

[KillerDAN]

Re: RCUnlocker

Finally managed to get the CH341 programmer, read the BIOS twice compared OK used HPUnlocker, wrote the BIOS back and this is when things start to get messy...
Comparing _unlocked.bin with BIOS there are differences:

01B01CA2: FF 01
01B01CA3: FF 00
01B01CA4: FF 00
01B01CA5: FF 00

Comparing original BIOS with _unlocked:

01B01C9A: 02 00
01B01CA2: 01 FF
01B01CA3: 00 FF
01B01CA4: 00 FF
01B01CA5: 00 FF
01B01CAA: 64 00
01B01CAC: 65 00
01B01CAE: 66 00
01B01CB0: 61 00
01B01CB2: 75 00
01B01CB4: 6C 00
01B01CB6: 74 00
01B01CB8: 75 00
01B01CBA: 73 00
01B01CBC: 65 00
01B01CBE: 72 00
01B01CC0: 30 00
01B01CD6: 01 00
01B01CDA: 09 00
01B01CDB: 04 00
01B01CDC: 02 00
01B01CDE: 53 00
01B01CE0: 2D 00
01B01CE2: 31 00
01B01CE4: 2D 00
01B01CE6: 35 00
01B01CE8: 2D 00
01B01CEA: 32 00
01B01CEC: 31 00
01B01CEE: 2D 00
01B01CF0: 31 00
01B01CF2: 35 00
01B01CF4: 30 00
01B01CF6: 39 00
01B01CF8: 36 00
01B01CFA: 36 00

Booted and still BIOS password locked 8\

So why, and how, did those 4 byes reverted back ?
What am I doing wrong ?

Can someone please provide me with a clean HP 640 G4 Bios ?

[hoaca388]

Re: RCUnlocker

This is the 11th generation, these programs will not unlock it, I tried it. That's why I asked for help. The password has been removed, thank you! But now there is a new problem when loading and displays the message with hp endpoint security problem

Post your request on the correct topic with serial number and 2 Bios + Ec files.

Finally managed to get the CH341 programmer, read the BIOS twice compared OK used HPUnlocker, wrote the BIOS back and this is when things start to get messy...

What am I doing wrong ?

Can someone please provide me with a clean HP 640 G4 Bios ?

Use RC Unlocker

[KillerDAN]

Re: RCUnlocker

Use RC Unlocker

RC Unlocker will not work 32MB files.

I need to work *both* the 32MB and 16MB BIOS ?

Soldering the MX25L12873FZNI seems a million times more difficult than the W25Q256JVEQ 8\

I am close to giving up 8\

[RethoricalCheese]

Re: RCUnlocker

No shortcuts. Only modifying 16MB chip is needed.

and HPUnlocker is useless/dangerous for newer models, don't even bother with that.

[hoaca388]

Re: RCUnlocker

RC Unlocker will not work 32MB files.

I need to work *both* the 32MB and 16MB BIOS ?

Soldering the MX25L12873FZNI seems a million times more difficult than the W25Q256JVEQ 8\

I am close to giving up 8\

aaaaa

[KillerDAN]

Re: RCUnlocker

Thank you @hoaca388 but given your previous response as well as for @RethoricalCheese is it worth flashing this one on the 32MB chip or should I address the 16MB one with RC Unlocker ?

[Stefan0]

Re: RCUnlocker

Thank you @hoaca388 but given your previous response as well as for @RethoricalCheese is it worth flashing this one on the 32MB chip or should I address the 16MB one with RC Unlocker ?

Did the file provided by hoaca388 worked?
Where is the original locked file?

[lapfix]

Re: RCUnlocker

Hello my friends...my Rcunlocker don t work ...any idea what s wrong..thank you

[oldm]

Re: RCUnlocker

Thank you

[mardul]

Re: RCUnlocker

How do I save a copy of my bios to a bin file?
I have HP Elitenbook 840 G3 with firmware 1.20 wiht block password bios.

[hoaca388]

Re: RCUnlocker

How do I save a copy of my bios to a bin file?
I have HP Elitenbook 840 G3 with firmware 1.20 wiht block password bios.

https://www.badcaps.net/forum/showpo...40&postcount=2

[Yillom]

Re: RCUnlocker

Thank you so much. you are such a great guy and this tool will help alot of us tech guys