Dell Latitude 7400 Bios Password

[bigig]

Re: Dell Latitude 7400 Bios Password

o sorry ok one sec

[lapfix]

Re: Dell Latitude 7400 Bios Password

o sorry ok one sec

What's the suffix !
There's another dump that you must upload

[zaklintown]

Re: Dell Latitude 7400 Bios Password

Hi guys,

Could you help to remove Password from Bios

Latitude 7400

5whxyy2-8fc8

Original dump attached,

Thanks

[Vesko356]

Re: Dell Latitude 7400 Bios Password

Hi guys,

Could you help to remove Password from Bios

Latitude 7400

5whxyy2-8fc8

Original dump attached,

Thanks

Please consider donation in support of the "Bios Requests" section of the forum.


At first boot enter the bios and input the Service Tag at the corresponding field, disable Absolute Computrace, save & restart. At the second boot, press Alt+F do exit MPM.
Good luck:

[zaklintown]

Re: Dell Latitude 7400 Bios Password

Absolute Gent,

Worked perfectly fine!

Amazing stuff - thank you very much.

P.S. At first fan was loud all the time until Alt + F not sure if that supposed to be like that but now all good 100%

[Vesko356]

Re: Dell Latitude 7400 Bios Password

Absolute Gent,

Worked perfectly fine!

Amazing stuff - thank you very much.

P.S. At first fan was loud all the time until Alt + F not sure if that supposed to be like that but now all good 100%

Great. You're welcome.
Yes it's supposed to be like that.

At the first boot press F2, write the service tag at the corresponding field of the bios, save & restart. After that at the second boot press Alt+F to exit manufacturing mode. And the fan will slow down.

.

[feherhollo]

Re: Dell Latitude 7400 Bios Password

Hi guys,

Could you help to remove Password from Bios

Latitude 7400

5whxyy2-8fc8

Original dump attached,

Thanks

How did you read out this chip? I have no success with any programmer. I have CH341A, EZP2023+, RT809F and tried with neoprogrammer and as programmer too. Chip not recognized, if I try with W25Q256FV which is the same spec buffer will be empty or corrupted. Cannot read out proper data. Chip is encrypted or is there any workaround to read out?
I tried with special wson8 cable and wired up also.

Please help me!

[aldopc]

Re: Dell Latitude 7400 Bios Password

How did you read out this chip? I have no success with any programmer. I have CH341A, EZP2023+, RT809F and tried with neoprogrammer and as programmer too. Chip not recognized, if I try with W25Q256FV which is the same spec buffer will be empty or corrupted. Cannot read out proper data. Chip is encrypted or is there any workaround to read out?
I tried with special wson8 cable and wired up also.

Please help me!

Hello, what chip model is it? in dell motherboards the same model can come with a different chip... winbond, Xmc, Gigadevide etc... indicate the model of your chip.

[feherhollo]

Re: Dell Latitude 7400 Bios Password

Hello, what chip model is it? in dell motherboards the same model can come with a different chip... winbond, Xmc, Gigadevide etc... indicate the model of your chip.

It was done. My wires was have connection issues.
By the way it was Gigadevice GD25B256D and it is not inside any programmer software so need to add manually

[abudo]

winbond 25Q80DVSIG 2016 dell latitude 7400

I bought CH341 mini programmer, can I use this unlock the BIOS?

If yes I would like to ask for your help.

Also I see 2 BIOS chips.

I tried BIOS-PW generator but not accepting the code.

I hope someone can help.

Thanks

[aldopc]

Re: winbond 25Q80DVSIG 2016 dell latitude 7400

I bought CH341 mini programmer, can I use this unlock the BIOS?

If yes I would like to ask for your help.

Also I see 2 BIOS chips.

I tried BIOS-PW generator but not accepting the code.

I hope someone can help.

Thanks

Hello, you must read and upload the 32mb chip, it says 256 (chip model) before reading, you must check if you have absolute activated in the security tab

[Dexter898]

Re: Dell Latitude 7400 Bios Password

Hi!

Please i need help, can someone remove bios passw from this orginal?

Service tag 59PJL33

thx

[Vesko356]

Re: Dell Latitude 7400 Bios Password

Hi!

Please i need help, can someone remove bios passw from this orginal?

Service tag 59PJL33

thx

Read the chip again, use verification.

.

[Dexter898]

Re: Dell Latitude 7400 Bios Password

Read the chip again, use verification.

.

I deleted orginal bios from chip before verification, but i find in forum another unlocked bios firmware and worked fine :-)

Thx for help

[MYWARUK]

Re: Dell Latitude 7400 Bios Password

Hello,
I have been given a Dell 7400 i5 with a locked BIOS password.
I have dumped Mac BIOS's before but I am unsure which one is the eeprom on this motherboard.
Once dumped, what else would be needed please?
Serial number is DYN7733-8FC8

Thanks

[volinakis]

Re: Dell Latitude 7400 Bios Password

Hello,
I have been given a Dell 7400 i5 with a locked BIOS password.
I have dumped Mac BIOS's before but I am unsure which one is the eeprom on this motherboard.
Once dumped, what else would be needed please?
Serial number is DYN7733-8FC8

Thanks

Upload bios dump here

[MYWARUK]

Re: Dell Latitude 7400 Bios Password

Upload bios dump here

Thanks very much, will be dumping bios later today.
I have seen a very good guide online so Im going to attempt myself also but will upload my Orig dump anyway just incase fails and can then use one from a pro.

Thanks again.

[MYWARUK]

Re: Dell Latitude 7400 Bios Password

I'm using a TL866ii Plus and using Xgpro v12.60, everything is making a connection, tested with a multimeter, triple checked all connections going to correct pads but the software can't autodetect the chip nor if I select the chip its detected, any suggestions on alternative software? I get "Pins Detected" but checked ID is showing 0x 00 00 00

Chip is a Winbond W25Q64JVIQ

Thanks

[MYWARUK]

Re: Dell Latitude 7400 Bios Password

I think my board has 2 bios chips, I read on here UC5 was the one to be read and that is the chip that isn't detected using my programmer and software, any help and advice be great thanks.

EDIT: Managed to dump UC6 and attached, still not able to dump UC5

[MYWARUK]

Re: Dell Latitude 7400 Bios Password

Sorry for another comment, does UC5 need to be removed from the board to be read? spotted there are holes in 4 traces that connect to the 2nd bios, is this maybe the reason software cant detect it? reading other section of bios also?
Thanks