Latitude 7210 2-in-1 Bios Password

[just_bios]

Re: Latitude 7210 2-in-1 Bios Password

Did you remove the motherboard to flash the bios and disconnect the screen cable.Is the screen cable in one piece or seperate connectors, have you checked it for bent pins etc. Have you tried the original bios.

not flashed org eeprom yet.. but i really checked all flex and cables..seems fine.. i will flash the org backup and will post results..

[just_bios]

Re: Latitude 7210 2-in-1 Bios Password

not flashed org eeprom yet.. but i really checked all flex and cables..seems fine.. i will flash the org backup and will post results..

hey..

after writing old (org) backup touchscreen is still not woking.. i think it must be replaced new one... (

only changable touch or lcd+touch..?

[nick1914]

Hi! How can i find BIOS chip? There are a few 1MB chips only on MB.

[kalilinux25]

Hi! How can i find BIOS chip? There are a few 1MB chips only on MB.

looks like the attached file is not viewable?

[nick1914]

looks like the attached file is not viewable?

Uploaded again.

[kalilinux25]

look for windbond chip labedl in the 3rd image

[lint4u]

Dell latitude 7210 2 in one

Pls help to repair my bios, dell logo then black screen and off
ST : 7T3QM33

BR

[Reza Hafez]

hello i need bios dump for fdv20 la-j321p
i need working dump file
rev1:a(00)
sn:FB1G373

[peste]

post merged...next time look for a thread with the name and model, motherboard model of the laptop, and post there, if you can't find it, then make a new thread..

[peste]

hello i need bios dump for fdv20 la-j321p
i need working dump file
rev1:a(00)
sn:FB1G373

post full name and model,etc.


post the contents of the bios chip even if it is corrupted..

[evgenymgv]

Hello Everyone
need to unlock bios password for Dell Latitude 7210 2-in-1
service tag: J9DV8C3
Thank you in advance

[peste]

Hello Everyone
need to unlock bios password for Dell Latitude 7210 2-in-1
service tag: J9DV8C3
Thank you in advance

try....

[evgenymgv]

try....

Its OK. Thanks a lot

[ein_individuum]

I try to read my Dell 7210 UEFi .
I get me an CH341a Programmer and allready tested it with NeoProgrammer on some simple 8bit Nand direct clamped on it. And it works.

Now I try to identify the UEFi Chip on the 7210.

in Post

Uploaded again.

Someone mention its the WinBound on picture 3. Which would be UT7. But the schematics i found for the 7210 it say its UC9. But i dont find any UC9. Im unsure if its the right chip, as I'm unable to read it. But this may be contact problems, as its hard to come by that UT7.
I alread cut of some of the metal shield to get clamp on the chip. But I still think it do not contact fully, because there are some smaler part (resistors etc) wich avoid the clamp to get to bottom of the chip.

But befor I get to do some soldering on it I whant to be sure I'm in the right place.

[ein_individuum]

Ok I one step further. The UEFI-Rom is the UC9. But that is on the backside of the Mainboard. So you have to disasamble the hole lapttop to "dismount" the mainboard. Additional I found out what that UT7 is: its the Thunderbolt Firmware.
But i still stuck with the reading off that W25Q256JV-Chip. Meanwhile i am sure its not an contact issue. I think its a incompatible CH341-device or software issue.