Dell latitude 7490 bios

[LBTT1121]

Hi Guys
Looking for a ME clean for my below bios
Laptop Model: Latitude 7490
Serial No: 7p6gsq2
Motherboard: LA-F321p rev2.0 (A01)

try and feedback

[ELOUALI]

hello everybody
please help me, need to repair the dump..
dell latitude 7490
daz40 LA-J322P Rev:2.0(A01) 2018-11-08
service tag: 1KFZST2

[hoaca388]

hello everybody
please help me, need to repair the dump..
dell latitude 7490
daz40 LA-J322P Rev:2.0(A01) 2018-11-08
service tag: 1KFZST2

Latitude 7490

Service Tag: 1KFZST2

[ELOUALI]

Latitude 7490

Service Tag: 1KFZST2

Thank you for your valuable help, all my respects to this great forum.

[dahm]

please I need bios EC dell latitude 7490
daz40 la-f321p
rev ; 2.0(A01)

[peste]

please I need bios EC dell latitude 7490
daz40 la-f321p
rev ; 2.0(A01)

post S/T, full name and model, motherboard model, etc.
post the contents of the bios chip even if it is corrupted..

[dahm]

post S/T, full name and model, motherboard model, etc.
post the contents of the bios chip even if it is corrupted..

Thank you, I just want the BIOS EC file, it doesn't matter
model dell latitude 7490
motherboardaz40 la-f321p
rev ; 2.0(A01)

[dahm]

post S/T, full name and model, motherboard model, etc.
post the contents of the bios chip even if it is corrupted..

Notice there are three BIOS chips on this model. I want them. Thank you.

[peste]

Notice there are three BIOS chips on this model. I want them. Thank you.

post all three first, even if they are corrupt...post service tag...

[kipikland]

Hi,

My laptop : Sce Tag: CH765S2 / LA-F321P Rev 3.0 2018-11-08 / latitude 7490 with latest BIOS 1.44 from June 11, 2025.
i attempted an update of the TPM to 7.2.2.0_V4, A03, before attempting the second TPM which would upgrade the version to 7.2.3.1, A00
At first TPM update all went well, i restarted laptop then nothing. The light on power button was going up then stay up for 3 second, then laptop reattempt a restart, same loop indefinitely.
Can you help ?
see a dump of my Bios through CH341

[hoaca388]

Hi,

My laptop : Sce Tag: CH765S2 / LA-F321P Rev 3.0 2018-11-08 / latitude 7490 with latest BIOS 1.44 from June 11, 2025.
i attempted an update of the TPM to 7.2.2.0_V4, A03, before attempting the second TPM which would upgrade the version to 7.2.3.1, A00
At first TPM update all went well, i restarted laptop then nothing. The light on power button was going up then stay up for 3 second, then laptop reattempt a restart, same loop indefinitely.
Can you help ?
see a dump of my Bios through CH341

Latitude 7490
Service Tag: CH765S2

[kipikland]

Latitude 7490
Service Tag: CH765S2

Thank you !!

[Tech Fox]

Hello community,

I'm repairing a Dell Latitude 7490 with a LA-F321P Rev 1.0 motherboard. The computer booted up without video, and I detected that the contents of UT6 were corrupted (mostly FFFF). The UT6 chip is 1MB and was almost empty.

I'm looking for a working BIOS file for the UT6 chip corresponding to this motherboard (not UC5 or UT2, just UT6). I've tried several incomplete dumps, but the system doesn't provide video; with some, it at least stays on.

I would greatly appreciate it if someone with a working backup could share the file or point me to a reliable, free download location.

Thank you very much in advance!

Motherboard: LA-F321P Rev 1.0

Model: Dell Latitude 7490

UT6 Chip: Winbond 25Q80 - 1MB

[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..

[LBTT1121]

Hello community,

I'm repairing a Dell Latitude 7490 with a LA-F321P Rev 1.0 motherboard. The computer booted up without video, and I detected that the contents of UT6 were corrupted (mostly FFFF). The UT6 chip is 1MB and was almost empty.

I'm looking for a working BIOS file for the UT6 chip corresponding to this motherboard (not UC5 or UT2, just UT6). I've tried several incomplete dumps, but the system doesn't provide video; with some, it at least stays on.

I would greatly appreciate it if someone with a working backup could share the file or point me to a reliable, free download location.

Thank you very much in advance!

Motherboard: LA-F321P Rev 1.0

Model: Dell Latitude 7490

UT6 Chip: Winbond 25Q80 - 1MB

try

[HARIS1990]

Re: Dell latitude 7490 bios




I upload clean BIOS for 7490 DAZ40 LA-F321P rev2.0 (A01)_I7-8650U_CPU-ID_806en

This BIOS help me and boot up successful

working perfect for me thanks bro

[vamota]

hi, I'm trying to change the Service Tag on my Dell Latitude 7490 and would appreciate some pointers/links on the best way to do this.

I'm thinking to get the BIOS into Manufacturing mode , from where I can simply type in a new Service Tag. But I've not been able to find how to get it into Manufacturing mode.

I have recently got a T48 programmer which seems to work fine with the Latitude 7490/7400 in-circuit, and I successfully used it with rex98's excellent -8FC8 patcher to remove the system password on a colleague's Latitude 7400 : it appears to work by putting the bios into Manufacturing mode.

I saw a YouTube video which showed that for -8FC8 motherboards you can hex-edit the extracted BIOS file and change a couple of instances of "00 FD AA" and "00 FC AA" to "OO Fx 00" to put it into Manufacturing mode. I tried this on the 7490 but unsurprisingly it didn't work.

So I'm wondering if I can do something similar for the 7490 ( motherboard DAZ40 LA-F322P , which is a -E7A8 type motherboard).

I also had a look in the extracted BIOS file using UEFItool but since I'm a bit of a novice at this it's all a bit unclear : I need to educate myself on what gets stored in the various regions etc - any pointers/links welcome.

Happy to post the BIOS file if that helps.

[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..

[LBTT1121]

hi, I'm trying to change the Service Tag on my Dell Latitude 7490 and would appreciate some pointers/links on the best way to do this.

I'm thinking to get the BIOS into Manufacturing mode , from where I can simply type in a new Service Tag. But I've not been able to find how to get it into Manufacturing mode.

I have recently got a T48 programmer which seems to work fine with the Latitude 7490/7400 in-circuit, and I successfully used it with rex98's excellent -8FC8 patcher to remove the system password on a colleague's Latitude 7400 : it appears to work by putting the bios into Manufacturing mode.

I saw a YouTube video which showed that for -8FC8 motherboards you can hex-edit the extracted BIOS file and change a couple of instances of "00 FD AA" and "00 FC AA" to "OO Fx 00" to put it into Manufacturing mode. I tried this on the 7490 but unsurprisingly it didn't work.

So I'm wondering if I can do something similar for the 7490 ( motherboard DAZ40 LA-F322P , which is a -E7A8 type motherboard).

I also had a look in the extracted BIOS file using UEFItool but since I'm a bit of a novice at this it's all a bit unclear : I need to educate myself on what gets stored in the various regions etc - any pointers/links welcome.

Happy to post the BIOS file if that helps.

attach bios original

[vamota]

bios file attached, motherboard DAZ40, LA-F322P. Current service tag : 7XD4HR2 . Desired service tag: 1N9FTT2

[vamota]

P.S. I should add that the reason I want to change the Service tag is that the laptop is enrolled to Microsoft Autopilot, and this is what I want to get rid of : I had assumed that changing the service tag was the best way to do this, but I have just discovered a separate active thread Dell Microsoft autopilot issue on this forum with screenshots outlining how to get rid of Autopilot by editing/invalidating the AUTOPILOT_MARKER sections using a hex Editor. I tried doing this on my bios, but wasn't clear on how exactly to do the invalidation step , so was not yet successful ..

[kondor12]

Dell 7490 I have a problem when booting for 40 seconds before the display appears. Can anyone help me to speed up booting?