Dell Latitude 5520 Bios Password unlock

[Itgigant]

Thread merged. You would need to take apart the laptop and backup the contents of the bios chips using an SPI programmer.

Is this the only way ? is there no software that can do this ?

[SMDFlea]

Thanks for the response !
Could you maybe help me ?
how would i get this file for this laptop ?

Thread merged. You would need to take apart the laptop and backup the contents of the bios chips using an SPI programmer.

[Itgigant]

Thanks for the response !
Could you maybe help me ?
how would i get this file for this laptop ?

[minhdigital]

Could someone help me unlock the bios password for the Dell 5520 i5-11gen
Service tag: g70fpg3-3fe2

Thanks in advance

Uploald your backup bios

[Itgigant]

Could someone help me unlock the bios password for the Dell 5520 i5-11gen
Service tag: g70fpg3-3fe2

Thanks in advance

[shiyab]

Hi can any one help me clean up this bios pls
Latitude 5520
ST CFTRZ93
3 amber and 6White led flash - Bios corruption detected.

hi try

[devp62]

Hi can any one help me clean up this bios pls
Latitude 5520
ST CFTRZ93
3 amber and 6White led flash - Bios corruption detected.

[FireFox7881]

I did n`t ask you about the history. Depending on the suffix you might be able to unlock it yourself

I'm sorry. Ok, thank you very much for the information.

[SMDFlea]

The laptop has had several owners and I have no information about its history over the past few years. A friend brought the laptop to me asking for help. Of course, I am categorically against illegal actions. As far as I know, he bought this laptop used and also does not know its history.

I did n`t ask you about the history. Depending on the suffix you might be able to unlock it yourself

3.4. Dell

Dell laptops store the password in EC. However, some generators exist depending on the code suffix.
See: https://beta.bios-pw.org/ .If the website is offline try: https://web.archive.org/web/*/https://bios-pw.org/
Note: All passwords must be entered with a US QWERTY Keyboard,you can use a USB one.
Note: The 6FF1 suffix has a bug,use your service tag with the 1F5A or BF97 suffix instead,Example: 1234ABC-BF97 .
Note: The list of examples does not include some other suffix codes that do work,such as E7A8 .
Note: If the BF97 suffix does not work try it with the E7A8 suffix instead.
Note: There is no publicly available 8FC8 generator available at the moment.
The CTRL-ENTER-ENTER keystroke after the password only applied to laptops with a suffix (xxxxxxx-8FC8 for example), until Dell also required it in some laptops using System Disable 16-Hex algorithm, on which only the Password+ENTER was needed at first and then in some models you needed the CTRL-ENTER-ENTER to properly delete the system passwords, otherwise the password would remain SET upon the automatic system reboot if just doing Password+ENTER until the proper CTRL-ENTER-ENTER keystroke was performed in certain models.
8FC8 Patcher software: https://www.badcaps.net/forum/troubl...l-8fc8-patcher

[FireFox7881]

https://www.badcaps.net/forum/troubl...23#post1622423

The laptop has had several owners and I have no information about its history over the past few years. A friend brought the laptop to me asking for help. Of course, I am categorically against illegal actions. As far as I know, he bought this laptop used and also does not know its history.

[SMDFlea]

Hello dear friends

Please help me remove Dell Latitude 5520 bios password

Latitude 5520
Kod Service Tag: 34PT4B3

I am sending a bios dump

Thank you very much!

https://www.badcaps.net/forum/troubl...23#post1622423

[FireFox7881]

Hello dear friends

Please help me remove Dell Latitude 5520 bios password

Latitude 5520
Kod Service Tag: 34PT4B3

I am sending a bios dump

Thank you very much!

[Thoa]

Normally the bios chip is powered from pin 8 of the programmer (I remember pin 8), but if there is a voltage drop, a cmos battery is needed.

i think pin 4 and 5 are voltage and gnd. and sorry for being offtopic

[Thoa]

Latitude 5520
Service Tag : 5176QG3

i verifyed, the data on the ic are exact what you posted. I am giong to try an older one of the post on 06-17-2024, 02-54 AM.

EDIT:
Does not work either.... for me, the notebook is dead.

[rasta101]

Hello everyone, after purchasing a Dell latitude 5520 MDM lock, what can you get?

[Thoa]

Latitude 5520
Service Tag : 5176QG3

Thx hoaca38

NeoProgrammer Reported succsess... Unfortunatelly it does still not power on. i am going to order a new cmos battery, cause i´ve cut the cable to bridge it for a second.

Normaly it only starts programming when a notebookbattery is recocnized AND the power cord is connected. But as i mentioned in an early post it has shut off immediatelly.

Thats why I think, something else is broken when i´ve pulled the powercord.

I am going to read the eeprom and compare to your file as soon as the battery arrives, just to be sure.

[hoaca388]

Do I have to plug off the CMOS Battery when flashing the chip or does it not matter?

Normally the bios chip is powered from pin 8 of the programmer (I remember pin 8), but if there is a voltage drop, a cmos battery is needed.

[Thoa]

Latitude 5520
Service Tag : 5176QG3

Do I have to plug off the CMOS Battery when flashing the chip or does it not matter?

[hoaca388]

opened the bin with UEFI TOOL and it looks pretty fine to me but the machine does not power on
Dell Latitude 5520
Service-Tag: 5176QG3
Mainboard: Southpeak 15

Latitude 5520
Service Tag : 5176QG3

[Thoa]

opened the bin with UEFI TOOL and it looks pretty fine to me but the machine does not power on

Dell Latitude 5520
Service-Tag: 5176QG3
Mainboard: Southpeak 15