latitude 5440 la-m401p la-m402p password

[ayceur]

i need to unlock 5440 la-m401p with svctag 6304SV3

Thank you so much!

[hoaca388]

Thank you so much! It is working, how do I make donation?

Welcome.

https://www.badcaps.net/donate/

[vn000023]

Password removed.

Thank you so much! It is working, how do I make donation?

[SMDFlea]

Post moved to 5440 thread from 3520. Don`t hijack unrelated threads in future please.... read the rules https://www.badcaps.net/forum/troubl...before-posting

[hoaca388]

Dear Team,

Could someone help me to reset password locked for Dell Latitude 5440 Service Tag GXCSV3? Motherboard model LA-M401P

Thank you so much

Password removed.

[vn000023]

Dear Team,

Could someone help me to reset password locked for Dell Latitude 5440 Service Tag GXCSV3? Motherboard model LA-M401P

Thank you so much

[rex98]

help me unlocking same Dell model,
ST: BJRJFY3

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

[andrew25]

help me unlocking same Dell model,
ST: BJRJFY3

[struart]

Im far from expert ;P really far.... Im begginer like you but but couple motherboards later
Resolder is fine if you use low temperature solder so you hotair that chip about 4 seconds and its done...
And you should practice on some broken motherboards soldering skills to avoid that situations....

[ahmed lachtar]

Yess the chip is missing a PIN on the right. There was a slight circuit imprint that was moved from a PIN but not disconnected. Should I send this to Poland and let an expert handle it ? I saw on Ali Express that you can buy a similar chip but honestly I don't trust my ability to resolder everythting back.

[struart]

Jeez
Clean motherboard with IPA in first place to see te REAL damage (its not tragic based on this photo) capacitors looks are in place ;P and chips pins are alive sooo....
About chip hmm its missing one pin on right? Only egde 8 pins are important ;P
DOnt ever go that hot for soo long make pauses if its tough....

[ahmed lachtar]

Too late alerady damaged the chip and the board. Look at the photos :'( :'(

Can this still be saved ?

[struart]

It need a bit of heating because of solder under the chip not only on edges. I use flux and hotair it come off after 1.5 min WSON8 chip are pain in a** if youre new to this Dont rush just warm it for some time it will go offjust dont go too hot Its matter of time not temp.

[ahmed lachtar]

Do you have an idea how to dissolder this chip ? With the 16Mb, it was quite easy because the pins were exposed, I added solder and the used the air gun. But with this one the pins are quite small. I tried adding flux and rising the temps (400°C) but no luck. Here is the image, it's the chip on the right.

[ahmed lachtar]

Thank you Struart, I will dissolder and send the dump here

[struart]

HI ahmed lachtar
Upload Winbond 25Q256JVEN which is 32MB flash. Your 16MB dump dont have required data to modify

[ahmed lachtar]

Hello,

This is my first BIOS unlock and I congratulate you guys for understanding this Rocket Science stuff.

So, I have a bios locked DELL Latitude 5440 (motherboard la-m401p) and serial number ST: J6BKSV3.

I have two chips that look like a bios :
- Winbond 25R128JVS -> Dissoldered and read content (backup validated twice)
- Winbond 25Q256JVEN -> Not read yet, I don't have the part to read it

The bios dump I read is 16Mb and I see that in this thread most of the dumps are 32Mb. So either I read the wrong chip or I don't have the same configuration as you.

Thank you in advance.

[peste]

Dell latitude 5440 Reg type : P165G002 with bios password
ST: DLGPTT3
please help

read the rules..https://www.badcaps.net/forum/troubl...before-posting

post the original bios of the laptop

[chankoro]

Dell latitude 5440 Reg type : P165G002 with bios password
ST: DLGPTT3
please help

[rex98]

J3VBSV3

upload the 16mb chip