Dell latitude 7490 bios

[mikrocok]

Use an SPI programmer to make backups of the bios chip(s) and post them here.

I don't have the original bios file, I got the bios file from this forum, I attached the backup results

[SMDFlea]

I don't have a previous bios backup

Use an SPI programmer to make backups of the bios chip(s) and post them here.

[mikrocok]

I don't have a previous bios backup

[mikrocok]

hello everyone,
i have a problem after updating the TPM firmware, after successfully updating TPM and rebooting here is the problem, my laptop can't enter the bios anymore
after trying several BIOS files from this forum, i got a file that can turn on my laptop again.

but the other problem is:
- TPM could not be initialized every time booting must press F1 to continue
- Missing TPM feature in BIOS
- Service TAG and Express Code changed different from before
-------------------------------------------------------------
Dell Latidude 7490 - i7-8650U
Motherboard code : DAZ40 LA-F321P REV:1.0 (A00)
Original service TAG is: H30FPN2
Original Express Service Code: 37187431310

Someone please help. thanks

[volinakis]

ohhh my goood, i try it everytime with the German Layout, thanks a lot It works

yep, it happens often. You are welcome. Keep in mind that all decrypted passwords are for US layout.

[kawasichmach]

use external USB US Keyboard

ohhh my goood, i try it everytime with the German Layout, thanks a lot It works

[volinakis]

i have tried this moretimes, but doesnt work, yet it show me the Dell Security Manager.

use external USB US keyboard

[kawasichmach]

use https://beta.bios-pw.org/

i have tried this moretimes, but doesnt work, yet it show me the Dell Security Manager.

[volinakis]

Hello, i have a Dell Latidude 7490
with Service Tag 1Q736S2-BF97
with no Access to Bios
Can Someonbe help me?

use https://beta.bios-pw.org/

[kawasichmach]

Hello, i have a Dell Latidude 7490
with Service Tag 1Q736S2-BF97
with no Access to Bios
Can Someonbe help me?

[peste]

merged post..

[MNTECH]

Unsure which one of the 20 stickers on this fkr leads me to the information on the file to flash this mobo with.

let alone any schematic to find where the bios chip is.

any recommendation on software maybe AsProgrammer? Ofc flashrom may work but am uncertain with 1.8v.
It'll work with a Ch341a + 1.8v adapter no?
Should I do Linux instead of Windows??

Thanks much for any consideration.

[EthanMai]

Re: Dell latitude 7490 bios



Try this ....

WORKED,TNANKS!

[refreshcomputers]

DAZ40 LA-F321P REV 3,0 A02 22,08,2018

[qayyum786]

Replace it with any of the previously posted files?

try

[CactusAcolyte]

replace bios region and add service tag manually from bios setup maintenance tab

Replace it with any of the previously posted files?

[qayyum786]

can i have help please

replace bios region and add service tag manually from bios setup maintenance tab

[CactusAcolyte]

Dell Latitude 7490
S/N: JNJCVN2
MB:
DAZ40 LA-F322P
Rev:1.0( A00 )

SPI Chip is probably Winbond W25Q128JV ?

Computrace (DeviceFreeze) prevents booting.
Would try to clean it myself but this is my first time trying this and I have no idea about the DMI address offsets or whatnot on this chip.. 😔

Thank you in advance!

can i have help please

[HyltonAJ]

try

Ok i will

try

Thank you very much it worked!!!

[qayyum786]

I did select the GD25Q127C option and posted it earlier. ill post it again below

try