Dell Latitude 5520 Bios Password unlock

[Thoa]

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

here is a video for example..https://www.youtube.com/watch?v=DWWi...nnel=ThisIsHow

Thats exactly what i tryed to avoid. my solder-skills are really not good. i´d love to use the clip.

[peste]

I am very beginner in programming a chip... the problem i start with is the question, which Manufacturer to choose in CH341A and which name the chip is. its a XMC 25RH256CXIQ PPF83600 01 2128U. Yes, its a Latitude 5520

maybe this thread is not the correct one, but i am desperate. There was the BIOS Pending to install, but i had no Battery, so it couldn´t flash it. Then I received the Battery I purchased and i plugged it on (but maybe not good enough). Then the System booted. No sign of flashing yet, and i plugged the powercord off, cause i wanted to empty the battery before charching cause it was new. But as the battery was not plugged in well, it shut off immediately. Since then, no sign of life. Absolutely dead machine

I hope i can get support here and someone can help me to get that machine to life again. I cannot send a dump because i do not know which kind of chip to choose

I purchased the CH341 programmer and hope to get this problem solved

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

here is a video for example..https://www.youtube.com/watch?v=DWWi...nnel=ThisIsHow

[Thoa]

I am very beginner in programming a chip... the problem i start with is the question, which Manufacturer to choose in CH341A and which name the chip is. its a XMC 25RH256CXIQ PPF83600 01 2128U. Yes, its a Latitude 5520

maybe this thread is not the correct one, but i am desperate. There was the BIOS Pending to install, but i had no Battery, so it couldn´t flash it. Then I received the Battery I purchased and i plugged it on (but maybe not good enough). Then the System booted. No sign of flashing yet, and i plugged the powercord off, cause i wanted to empty the battery before charching cause it was new. But as the battery was not plugged in well, it shut off immediately. Since then, no sign of life. Absolutely dead machine

I hope i can get support here and someone can help me to get that machine to life again. I cannot send a dump because i do not know which kind of chip to choose

I purchased the CH341 programmer and hope to get this problem solved

[hoaca388]

Hello everyone, I needed to recover a corrupted bios SOUTH PEAK 15 MB 213253-1 service tag: 3Z9GTG3 the equipment was forcibly turned off in the middle of a bios update. Here is the file extracted from the bios chip

Latitude 5520

Service Tag: 3Z9GTG3

[ralfe18]

Hello everyone, I needed to recover a corrupted bios SOUTH PEAK 15 MB 213253-1 service tag: 3Z9GTG3 the equipment was forcibly turned off in the middle of a bios update. Here is the file extracted from the bios chip

[FireFox7881]

Unlocked

Thank you very much, everything works

[hoaca388]

Hello All!

Please help me remove Dell Latitude 5520 bios password

Service Tag: 21PT483

I am sending a bios dump

Thank you very much!

Unlocked

[FireFox7881]

Hello All!

Please help me remove Dell Latitude 5520 bios password

Service Tag: 21PT483

I am sending a bios dump

Thank you very much!

[hoaca388]

Good day sorry for the late response.

Both files you posted, have no display
Just one white light and nothing after that.

Replace the bios chip.

[bbanana]

Good day sorry for the late response.

Both files you posted, have no display
Just one white light and nothing after that.

hard to do your case, if clean ME it will come 3-6 code flash, try to ingored 3-6 flash code will didnt complete boot. Hope someone can help you.

[mahlon simwnaja]

try more....

Good day sorry for the late response.

Both files you posted, have no display
Just one white light and nothing after that.

[bbanana]

Good day
THANK YOU for the quick response. Laptop is now showing some sign of life (white light) with the bios file you provided but still not turning on .

With the bios file you provide this will be 10th or 11th attempt

try more....

[mahlon simwnaja]

This laptop makes me sad with your various tries...how many bios did you try!!!!

This is the last version 1.44.1
Yours is : 1.43.0

Good day
THANK YOU for the quick response. Laptop is now showing some sign of life (white light) with the bios file you provided but still not turning on .

With the bios file you provide this will be 10th or 11th attempt

[lapfix]

Good day
Please HELP
I wanted to change serial number on the laptop but then the laptop doesn't display anymore after bios reprogram , I have tried every clean bios from this thread, but the unit complains about corrupt bios (3 amber and 6 white light flash ) and just simply doesn't want to display, I have been trying for 3 days from page 1 until the last page and still no display with every bios file I try.
I eventually gave up and restored the original BIOS file and now there's no power no sign of life. PLEASE HELP.

MB N0 / Southpeak15 TGL MB 8L 19819-1 82G7H$LA
SN/ 3NDPGL3
MODEL: DELL LATITUDE 5520

This laptop makes me sad with your various tries...how many bios did you try!!!!

This is the last version 1.44.1
Yours is : 1.43.0

[mahlon simwnaja]

Good day
Please HELP
I wanted to change serial number on the laptop but then the laptop doesn't display anymore after bios reprogram , I have tried every clean bios from this thread, but the unit complains about corrupt bios (3 amber and 6 white light flash ) and just simply doesn't want to display, I have been trying for 3 days from page 1 until the last page and still no display with every bios file I try.
I eventually gave up and restored the original BIOS file and now there's no power no sign of life. PLEASE HELP.

MB N0 / Southpeak15 TGL MB 8L 19819-1 82G7H$LA
SN/ 3NDPGL3
MODEL: DELL LATITUDE 5520

[peste]

Hello All!

Please help me remove Dell Latitude 5520 bios password

Service Tag: 21PT483

I am sending a bios dump

Thank you very much!

the bios is 32MB...you posted a 1MB one

[FireFox7881]

Hello All!

Please help me remove Dell Latitude 5520 bios password

Service Tag: 21PT483

I am sending a bios dump

Thank you very much!

[hakarune]

Unlocked.

Awesome! I'll flash it this weekend. Thank you for the help

[hoaca388]

I followed the Dell website guide to get the service tag. Says it should be labeled EX on the sticker. Here's all the codes from the sticker but I think it's actually the ST one. Could have sworn I saw the bios say 6P13SL3 code followed by 8FC8 or similar.


MFG YR:2022

ST:6P13SL3

EX:14574205047

Unlocked.

[hakarune]

Service tag ?

I followed the Dell website guide to get the service tag. Says it should be labeled EX on the sticker. Here's all the codes from the sticker but I think it's actually the ST one. Could have sworn I saw the bios say 6P13SL3 code followed by 8FC8 or similar.


MFG YR:2022

ST:6P13SL3

EX:14574205047