Bios unlock for DELL LATITUDE 7420

[rex98]

Hi, I appreciate if someone can help with unlocking the Bios admin password for Dell Latitude 7420. Details as follows.

82KS2J3-8FC8

Service Tag: 82KS2J3
BIOS Version: 1.21.0
Express Service Code: 17570093007

Please let me know if any other details are required. Thanks

where is the bios dump?

[Mani26]

This is a after market device. Old user credentials were not flushed. So, I am unable to bypass. Is there anyway to get bios dump?

[rex98]

This is a after market device. Old user credentials were not flushed. So, I am unable to bypass. Is there anyway to get bios dump?

you need bios programmer like cheap ch341a and hot air and do some research in youtube university.
https://www.badcaps.net/forum/troubl...before-posting

[botero]

I'm desparate, I don't have a dump because i've wrong the model of flash. I've readed it like a W25Q256 but the label of mine is a 25R256JVEN and it was happened when i've tried to post here.
Someone can help me, please? I need a new bios without password.

Here my info:
LATITUDE 7420
service tag: 6Q7C0F3
Bios Version: 1.23.1
motherboard model: GDC31 LA-K371P Rev. 3.0 (A02) 2021-01-21.
PWB PN: D955X
spi model: Winbond 25R256JVEN

Thank you

[qayyum786]

I'm desparate, I don't have a dump because i've wrong the model of flash. I've readed it like a W25Q256 but the label of mine is a 25R256JVEN and it was happened when i've tried to post here.
Someone can help me, please? I need a new bios without password.

Here my info:
LATITUDE 7420
service tag: 6Q7C0F3
Bios Version: 1.23.1
motherboard model: GDC31 LA-K371P Rev. 3.0 (A02) 2021-01-21.
PWB PN: D955X
spi model: Winbond 25R256JVEN

Thank you

So you have image only issue is bios locked
you just read bios with any name that is not an issue file size should be same just verfy your dump in hxd and post here

[botero]

I've tried many times and now the flash is unreadable. I think is broken. Infact i've bought new flashes.
I've the first dump but i've read with a wrong model setting and could be results corrupted.

Below the dump, if i remember well it is the first reading with the wrong flash setting. Then my programmer doesn't recognize the pins and the dump was formed only by FF values. How you can see the name of file includes the wrong setting W25Q256 instead 25R256.
Can we try with it, please? Thank you.

[qayyum786]

I've tried many times and now the flash is unreadable. I think is broken. Infact i've bought new flashes.
I've the first dump but i've read with a wrong model setting and could be results corrupted.

Below the dump, if i remember well it is the first reading with the wrong flash setting. Then my programmer doesn't recognize the pins and the dump was formed only by FF values. How you can see the name of file includes the wrong setting W25Q256 instead 25R256.
Can we try with it, please? Thank you.

you can try this its a tested bios if no luck than we will chk your posted bios

[botero]

you can try this its a tested bios if no luck than we will chk your posted bios

Nothing, i,ve flashed but the fan runs in high RPM and the screen is black. I've used a new flash and i've programmed with tl866II Plus with auto-detect chip setting.

[rex98]

Nothing, i,ve flashed but the fan runs in high RPM and the screen is black. I've used a new flash and i've programmed with tl866II Plus with auto-detect chip setting.

use this.
1st boot, press F2, write service tag, disable Absolute, save (Apply changes), restart. 2nd boot press Alt+F to exit manufacturing mode

[botero]

use this.
1st boot, press F2, write service tag, disable Absolute, save (Apply changes), restart. 2nd boot press Alt+F to exit manufacturing mode

Great, great, great!!

Thank you very much, the laptop now works!!!

[vuiquata007]

Hi !
Anybody help me to remove bios password Dell latitude 7420
ST: 5SYZ0F3 - 8CF8
32Mb bios file attached.

Thanks in advance

[minhdigital]

Hi !
Anybody help me to remove bios password Dell latitude 7420
ST: 5SYZ0F3 - 8CF8
32Mb bios file attached.

Thanks in advance

Send to you

[vuiquata007]

Send to you

It's work perfect. Thank you Minh đại ca

[DAHOUD]

I have dell 7420 was locked but during reading BIOS looks not succeed because when i return its original just changing colour but this is one work perfectly with BIOS password am getting confused for sure
Help me to unlock and clean me please may will help me as botelo
motherboard number LA-K371P
SERVICE TAG: 6ZGQ5D3

[hoaca388]

I have dell 7420 was locked but during reading BIOS looks not succeed because when i return its original just changing colour but this is one work perfectly with BIOS password am getting confused for sure
Help me to unlock and clean me please may will help me as botelo
motherboard number LA-K371P
SERVICE TAG: 6ZGQ5D3

Latitude 7420

[DAHOUD]

Thank you so much for reply but just hanging on logo am hopeless now
any one help me with working file

[hoaca388]

Thank you so much for reply but just hanging on logo am hopeless now
any one help me with working file

Try older version

[trunguntilyou]

help pls remove computrace lock!
I'm sorry if I'm not allowed to request 2 bios at the same time
st: 47QBCK3 and DML1FK3

[hoaca388]

help pls remove computrace lock!
I'm sorry if I'm not allowed to request 2 bios at the same time
st: 47QBCK3 and DML1FK3

VVVV

[trunguntilyou]

VVVV

works perfect! Thank you, comrade, I tried comparing with HDX to try it myself but I saw a lot of change, it's difficult to do it myself.