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.

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

Can this still be saved ?...

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....

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

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...