Dell 8FC8 Bios Password Patcher

[bzzt]

I see that the script takes the region from 0x1000 with a length of 0x100000, which when analyzed by the UEFITool is the padding after the Descriptor region.

Then you are searching for "00 FC AA" and replacing it with "00 FC 00"

The script does it again for "00 FD AA" and replacing it with "00 FD 00"

Thanks for the wriite-up. Worked perfectly on a Dell 5430 BIOS 1.18.0.

[teeman]

cant download dell 8fc8 patcher

[Vesko356]

https://www.badcaps.net/forum/troubl...36#post3181736

[Paolo Crocè]

Good morning. I have one question: for this method to work I understand I need a Bios "dump".
Are "dump" and "Backup" the same thing?
Do I need a chip programmer to create dumps and/or backups or is there any procedure to execute the dump/backup and upload the patched ones with no additional hardware and no need to open the laptop?

Thank you very much and apologies for the dummy questions, but I couldn't find the answers anywhere.

Thx,
P.

[Mr.Nobody]

Good morning. I have one question: for this method to work I understand I need a Bios "dump".
Are "dump" and "Backup" the same thing?
Do I need a chip programmer to create dumps and/or backups or is there any procedure to execute the dump/backup and upload the patched ones with no additional hardware and no need to open the laptop?

Thank you very much and apologies for the dummy questions, but I couldn't find the answers anywhere.

Thx,
P.

Yes Paolo,
A dump is a file created after reading data from a chip with chip reader/writer (programmer).
A backup is a file created for data you don't want to lose....can be a dump from a chip or can be a zip file containing a dump from a chip.
...and yes 100% you need to open the laptop for this work.

[Vesko356]

Good morning. I have one question...

Yes Paolo,
A dump is a file created...

Also read this thread
BIOS guides, methods, resources and tools
https://www.badcaps.net/forum/troubl...rces-and-tools

[VHS]

Flea et al.
I've hoped to find a tool to put a Dell BIOS back into service mode for at least a decade.
I have to say I think the last one the old Dell SVS Tag utility worked for was the D600.
Can I use this patcher on anything locked or not, regardless of the suffix?
If not, would changing those hex strings in the method described work on a wide range of current Dell boards (say 7th Gen CPU and newer?)
What would be absolutely fantastic is if I could make a generic or model-based flash utility to revert the BIOS to service mode like we could with the old TR4 BIOS back in the Latitude CP days.
I think Dell figured out we could turn a P166 CP into a PII 400 CpiA Clone with that BIOS and the proper CPU swap!
Those were the days.


Of course, I have a Latitude 5500 with a locked 8FC8 Bios, or I wouldn't be here.

[janaka]

thanks a lot

[azefnef]

Where can I download Dell 8FC8 Bios Password Patcher

[Vesko356]

Read the whole thread before asking questions please.

[Mr.Nobody]

Flea et al.
I've hoped to find a tool to put a Dell BIOS back into service mode for at least a decade.
I have to say I think the last one the old Dell SVS Tag utility worked for was the D600.
Can I use this patcher on anything locked or not, regardless of the suffix?
If not, would changing those hex strings in the method described work on a wide range of current Dell boards (say 7th Gen CPU and newer?)
What would be absolutely fantastic is if I could make a generic or model-based flash utility to revert the BIOS to service mode like we could with the old TR4 BIOS back in the Latitude CP days.
I think Dell figured out we could turn a P166 CP into a PII 400 CpiA Clone with that BIOS and the proper CPU swap!
Those were the days.


Of course, I have a Latitude 5500 with a locked 8FC8 Bios, or I wouldn't be here.

Post your locked BIOS file in the dedicated thread : https://www.badcaps.net/forum/troubl...-bios-password

and somebody will help you...
Cheers!

[azefnef]

Where or how can I get the bios dumb I have a dell latitude 5520

[Mr.Nobody]

Where or how can I get the bios dumb I have a dell latitude 5520

Read here :
https://www.badcaps.net/forum/troubl...21#post1622421

[hassanbutt799]

can you send this file ?

[SMDFlea]

can you send this file ?

https://www.badcaps.net/forum/troubl...48#post3220848

Thread closed until further notice.