Dell Latitude 5490 LA-F401P rev 1.0(a00) need bios

[hoaca388]

i tried but no display
i downloaded one bios in that bios display working properly. but lan port not detecting. you can repair lan port in that bios?
i'm attaching that bios also

LAN corrupted.

[Magnusa2]

LAN corrupted.

how can solve this problem ?
this is commen issue for 5490 i lash almost 10 more pieces in last day. all same issue lan not detecting

[SMDFlea]

how can solve this problem ?
this is commen issue for 5490 i lash almost 10 more pieces in last day. all same issue lan not detecting

Check differences between the original bios at post 16 ,and the one you tried at post 20

post 16


post 20

[Magnusa2]

Check differences between the original bios at post 16 ,and the one you tried at post 20

post 16


post 20

THANKS FOR THE INFORMATION. BUT WHEN I CHANGING POST NO 20 BIOS (DISPLAY OK BIOS) GBE PCIE PORT 5 TO 4 THEN DISPLAY NOT COMING

[qayyum786]

CHK YOUR LUCK AGAIN

[Magnusa2]

CHK YOUR LUCK AGAIN

I TRIRD THIS FILE . BUT DISPLAY NOT CAME..

[moh17]

plz bios bin Latitude 5490
ddm70 la-f401p rev 1.0
Service Tag: 9DHDTQ2

[Magnusa2]

plz bios bin Latitude 5490
ddm70 la-f401p rev 1.0
Service Tag: 9DHDTQ2

TRY

[moh17]

thankssssss

[stein-labs]

Hello guys, sorry for reviving this old thread.

I'm super new to BIOS flashing, and I wouldn't like to brick my Dell's BIOS.
I've bought a Dell Latitude 5490 for almost nothing from a local company that closed its doors. So they were almost giving them for free.
I bought two of the same model, both with BIOS password set.

I could clear one by using that bios-pw tool which generates a backdoor password for it. But when I tried to do the same for the other one (I repeat: same exact model and rev), it didn't work.

This was a couple of years ago, my actual problem is that the BIOS battery emptied and now I have to re-flash the BIOS. I tried to follow Dell's official method (by sticking a USB while pressing F7 with a Dell tool to re-flash the BIOS) but it asks me for the old password again, so I'm stuck with this nice locked laptop.
A friend of mine borrowed me a CH341 flasher and told me that if I got the correct firmware for it, I could re-flash it and bypass the password.
Diving into this forum, I found that you're all talking about the service tag related to the BIOS firmware dump, so I'm now kind of confused and I fear I mess the BIOS up if I flash any of the firmwares I've seen here.

Anyways, here's the service tag for this Dell Latitude 5490 laptop: 82ZRST2
If anyone could guide me into what to do, I would love to learn and try for myself.

Huge thanks in advance.

[ravinderacl]

Dear Friend
Require LA-F401P REV 3.0 BIOS
SERVICE TAG- J1M9PV2
URGENT REQUIRE

[SMDFlea]

RULES UPDATE for BIOS requests/offers AVOID BANNING, READ BEFORE POSTING
https://www.badcaps.net/forum/troubl...before-posting

[moscast]

Hi everyone,
I wanted to ask you if you could explain to me why this dell 5490 fails to update the bios.
When I start the update from Windows with the tool downloaded from the official website, it seems to be installing it and then it asks me to restart the PC but when it restarts the classic bios flash doesn't start but Windows restarts as if nothing had happened.
I also tried to run the update from the USB stick by pressing F12 during the post but the result is always the same.

The service tag is: H27K5Q2 and I also attach the bios file.

Thank you all.

[qayyum786]

Hi everyone,
I wanted to ask you if you could explain to me why this dell 5490 fails to update the bios.
When I start the update from Windows with the tool downloaded from the official website, it seems to be installing it and then it asks me to restart the PC but when it restarts the classic bios flash doesn't start but Windows restarts as if nothing had happened.
I also tried to run the update from the USB stick by pressing F12 during the post but the result is always the same.

The service tag is: H27K5Q2 and I also attach the bios file.

Thank you all.

Try a new one

[moscast]

Hi, tried the bios but now I haven't any post. Only black screen and the fun run maximun speed

[moscast]

But not programming a bios with my backup, it doesn't work black screen. Who it is possible?

[qayyum786]

But not programming a bios with my backup, it doesn't work black screen. Who it is possible?

You mean you dont have a video in your own back bios ?

[moscast]

You mean you dont have a video in your own back bios ?

yes i haven,t video, black screen only

maybe your bios was more updated than mine and maybe something was written in other chips like EC and now putting back my backup, there is firmware incompatibility

[qayyum786]

yes i haven,t video, black screen only

maybe your bios was more updated than mine and maybe something was written in other chips like EC and now putting back my backup, there is firmware incompatibility

Try

[moscast]

Try

Is this difference that the fist one you sent to me?

[moscast]

However it doesn't work.....

Can someone help me? I add my latest BIOS backup which worked

The service tag is: H27K5Q2

[Stefan Steff]

This bios worked for me on a 5490.It has password but can be removed visiting bios-pw.org.