Dell Latitude 5400 Bios password

[yomiyep707]

Re: Dell Latitude 5400 Bios password

Hello, unlock my bios please, i forget password
Motherboard - EDC41 LA-G891P
Serial Number - HCPT2Z2

[aldopc]

Re: Dell Latitude 5400 Bios password

Hello, unlock my bios please, i forget password
Motherboard - EDC41 LA-G891P
Serial Number - HCPT2Z2

Ok try and comment.

[yomiyep707]

Re: Dell Latitude 5400 Bios password

Ok try and comment.

Thank you very much, everything works great!

[jetblue]

Re: Dell Latitude 5400 Bios password

hi,i have a pickle here. i did many bios dump of 5400 lats and used the methods here to unlock them but this one i have will not allow me to dump. it has a 25b256DYIG smd bios
and it halts every programmer i put it to. the ground seems to be the culprit or pin 4.
i use direct wire soldered to the solder blobs then wire to the programmer.
its a LA-G891P rev1.0 board with the 23VPXY2-8FC8
is my bios chip fucked? it still turns on and allows me to get to setup.

[aldopc]

Re: Dell Latitude 5400 Bios password

hi,i have a pickle here. i did many bios dump of 5400 lats and used the methods here to unlock them but this one i have will not allow me to dump. it has a 25b256DYIG smd bios
and it halts every programmer i put it to. the ground seems to be the culprit or pin 4.
i use direct wire soldered to the solder blobs then wire to the programmer.
its a LA-G891P rev1.0 board with the 23VPXY2-8FC8
is my bios chip fucked? it still turns on and allows me to get to setup.

Hello, what programmer are you using?

[jetblue]

Re: Dell Latitude 5400 Bios password

so far i used the common ch341 and the blue one v1.7 with voltage select. both freeze the neoprogrammer and the ch341 the moment i connect to usb. used the clip side then the headers. i disconnect the ground wire it unfreezes but then i cant read the chip.

[aldopc]

Re: Dell Latitude 5400 Bios password

so far i used the common ch341 and the blue one v1.7 with voltage select. both freeze the neoprogrammer and the ch341 the moment i connect to usb. used the clip side then the headers. i disconnect the ground wire it unfreezes but then i cant read the chip.

Did you desolder the chip from the board or are you reading it soldered? If so, you must remove it from the motherboard and read it out.

[bestlaptop]

Re: Dell Latitude 5400 Bios password

Hi. 5400 pass locked. please

[jetblue]

Re: Dell Latitude 5400 Bios password

i reinstalled the wires for a 4th time for some reason to see if i could try something diffrent and the ch431 acted normal and i was able to dump the firmware!
no idea what i did diffrent i suspect a witches spell for that day but thanks everyone.

[bestlaptop]

Re: Dell Latitude 5400 Bios password

i reinstalled the wires for a 4th time for some reason to see if i could try something diffrent and the ch431 acted normal and i was able to dump the firmware!
no idea what i did diffrent i suspect a witches spell for that day but thanks everyone.

It can be done much easier if you buy a probe on ali or other marketplace. just google "wson8 test probe".

[hieu13pro]

Re: Dell Latitude 5400 Bios password

Hello. I have a BIOS file that is experiencing issues. My Dell computer is getting quite hot even though it has just started up Windows and opened one Chrome tab. Can you help me modify this BIOS file? Thank you. Dell 5400 LA-G891P REV 1.0

[hieu13pro]

Re: Dell Latitude 5400 Bios password

La-g891p rev 1.0
svtag:8h573h2
thank you!!!

[lapfix]

Re: Dell Latitude 5400 Bios password

La-g891p rev 1.0
svtag:8h573h2
thank you!!!

Bios password or computrace or no display !!

[hieu13pro]

Re: Dell Latitude 5400 Bios password

My device is slow to boot up and becomes very hot quickly.

[lapfix]

Re: Dell Latitude 5400 Bios password

My device is slow to boot up and becomes very hot quickly.

Try this clean me

[hieu13pro]

Re: Dell Latitude 5400 Bios password

The BIOS is functioning, but there is no fan detected, indicating a fan error.

My computer gets hot after using it for a while like this. Can you help me? Thank you

[Maxpower3]

Re: Dell Latitude 5400 Bios password

Hello,
I found a solution to clear password from BIOS bin file (using "Hex Editor Neo"):
1- Select the range 00045000 to 00048fff
2- Select "Edit" then "Fill"
3- Put "ÿ" in "Pattern" zone.
4- Choose "Fill selection" then clic on "Fill" button.
5- Save the new file.
Enjoy!!
NB : Always make copy of backup then work....

Hello
Need unlock 2 dell 5400 32Mo Bios
I try this method on 2 Pc's, work well
but not work on two another 5400

[hardware1]

Re: Dell Latitude 5400 Bios password

Hello
Need unlock 2 dell 5400 32Mo Bios
I try this method on 2 Pc's, work well
but not work on two another 5400

Here are your Unlocked files, I hope it works fine.
In the first boot go to BIOS Menu, put your Service Tag, disable absolute (if it's enabled), save and exit. After that you can press ALT+F to exit MPM.

Service Tag_1: 4YNG2Z2.
Service Tag_2: HZKF2Z2.

[Maxpower3]

Re: Dell Latitude 5400 Bios password

Here are your Unlocked files, I hope it works fine.
In the first boot go to BIOS Menu, put your Service Tag, disable absolute (if it's enabled), save and exit. After that you can press ALT+F to exit MPM.

Service Tag_1: 4YNG2Z2.
Service Tag_2: HZKF2Z2.

Thanks
I try tomorrow
just need 2 modifications here ?
Perfect thanks

[hardware1]

Re: Dell Latitude 5400 Bios password

Thanks
I try tomorrow
just need 2 modifications here ?
Perfect thanks

You're welcome.
Yes, I think this will erase the Password.