latitude 5420 board LA-k491P bios problem.

[hoaca388]

CAN YOU FIX THIS BIOS PLZ
THIS ONE IS WORKING BUT STUCK ON DELL LOGO
DELL 5420
PART NO LA-K491P REV 2 2020-11-16
SERVICE TAG 8HW38C3
I7 11TH GEN

Latitude 5420

Service Tag: 8HW38C3

[jeliecerlara]

Thank you very much, it works ok.

[crazyboy.sang]

plz help me , this bios eror TPM device is not detected
Dell 5420
SVT : FFNC6G3
i5 gen 11

[hoaca388]

plz help me , this bios eror TPM device is not detected
Dell 5420
SVT : FFNC6G3
i5 gen 11

Latitude 5420

Service Tag: FFNC6G3

[crazyboy.sang]

Latitude 5420

Service Tag: FFNC6G3

thank you very much, but TPM device not detected

[diamon]

ServiceTag: 6ZKF6J3
I had used the https://github.com/chromebreakerdev/DellBIOSTools script, but it gives me an error, that the Intel signature not found.
Think i perhaps know why, wanted to read the bios file with my EZP2019 programmer and pushed the wrong button 😣 (AUTO > auto recognize the chip brand and size).

[peste]

post merged..next time look for a thread with the name and model, motherboard model of the laptop, and post there, if you can't find it, then make a new thread..

[SMDFlea]

ServiceTag: 6ZKF6J3
I had used the https://github.com/chromebreakerdev/DellBIOSTools script, but it gives me an error, that the Intel signature not found.
Think i perhaps know why, wanted to read the bios file with my EZP2019 programmer and pushed the wrong button 😣 (AUTO > auto recognize the chip brand and size).

Corrupt backup, slow the programmer speed to 6Mhz and try again.

[diamon]

I have read the bios chip again with 6Mhz.

The first time was wanted to read the chip, I pressed the Auto button. I noticed it was starting to erasing, I removed the USB cable

[diamon]

If the file is still corrupt, is there a solution ?

[diamon]

A small update regarding my situation.
I had found in topic need bios dump dell latitude 5420 cpu 11th this posting.
Someone else mentioned that the file "try 2nd outimage" worked for that person, so I have used it also.

And I can confirm, the file worked like a charme. Kudo's to qayyum786

[maket]

Re: latitude 5420 bord LA-k491P bios problem.



Here's your Unlocked BIOS, hope it works fine.

Hello. I tried your file but it flashes 3 yellow 6 white.

[ali akbar]

dell latitude 5420
gdf40 la-k91p/rev:3.0
st-1RJS3K3
PASSWORD
plz unlock

[shiyab]

dell latitude 5420
gdf40 la-k91p/rev:3.0
st-1RJS3K3
PASSWORD
plz unlock

hi try

[modd1uk]

Hi guys, I have a latitude 5420 here, I've done a few but this one is proving to be an issue.

I successfully removed the admin password with the 8FC8 patcher (although it seems to change entries in more than two locations?).

I was under the impression the 8FC8 patcher only edited two strings, when I use it on this dump it edits 4.

Chip resoldered, laptop boots but NVME not detected, from a bit of reading this could be a corrupt ME region?

Can anybody help please?

I have uploaded the original locked dump, so if somebody could remove the admin password and repair the ME I would be forever grateful, thank you.

Dell Latitude 5420
ST - 90517M3

[kumar1144]

Hi in this bios TPM Error , dell logo hang, green, red, blue, white screens coming
Kindly anyone fix This
Dell Latitude 5420,
Service TAG-9QZF3F3,
LA-K491P REV 2.0(A01)
2021-10-15.
Thank You in advance

[hoaca388]

Hi in this bios TPM Error , dell logo hang, green, red, blue, white screens coming
Kindly anyone fix This
Dell Latitude 5420,
Service TAG-9QZF3F3,
LA-K491P REV 2.0(A01)
2021-10-15.
Thank You in advance

File is corrupted

[kumar1144]

File is corrupted

any alternate file please,
Dell Latitude 5420,
Service TAG-9QZF3F3,
LA-K491P REV 2.0(A01)
2021-10-15.


Here I attached bios which i got from badcaps, in this bios dell logog coimg after blank display. kindly help me with thiss. in this bios TPM not Detected error kindly fix this

[modd1uk]

Hi guys, I have a latitude 5420 here, I've done a few but this one is proving to be an issue.

Chip resoldered, laptop boots but NVME not detected, from a bit of reading this could be a corrupt ME region?

Can anybody help please?

I have uploaded the original locked dump, so if somebody could remove the admin password and repair the ME I would be forever grateful, thank you.

Dell Latitude 5420
ST - 90517M3

[Laboratorio JG]

HI, COULD YOU HELP ME WITH THIS BIOS? IT SHOWS A TPM ERROR AND HAS AN ADMINISTRATOR KEY? CAN YOU HELP ME PLEASE?
BOARD MODEL: GDF40 LA-K491P REV 2.0(A01)
2020-11-16
DELL MODEL: LATITUDE 5420
ST: 4X036D3

[saudi_ma]

Hello everyone,

I have a Dell Latitude 5420 (tested without HDD) and I’m running a diagnostic tool such as Aiken Workbench. The problem is that the tool detects the onboard LAN card, but it shows the message:

"no working driver for it"
and the test result is NO Driver.

Interestingly, when I install Windows, the LAN card works perfectly fine, which confirms that the hardware itself is okay. I have tried multiple cables and diagnostic environments, but the result is the same.

For comparison, I have a BIOS dump from a working unit and another from the problematic unit. The file sizes are identical. I suspect the issue might be related to a missing or corrupted PXE/UEFI network driver module in the firmware.

My questions:

• Has anyone experienced this issue before?
• What are the recommended steps to add the proper LAN driver to a diagnostic/WinPE environment, or to safely repair the firmware?
• If no solution can be found, I would appreciate it if any expert who knows how to fix this fault could contact me privately to suggest the right approach.

Thank you in advance for your help.

[peste]

post merged..next time look for a thread with the name and model, motherboard model of the laptop, and post there, if you can't find it, then make a new thread..