Dell Latitude 7470 weird Password problem

[Munzab]

Hi all. i am wondering if people may give me some insight. i have a bios password dell latitude e7470, and in general, generating a dell code is easy. however in this one, while it accepts the code, it does not unlock anything and once restarted, the lock is back again

ive used a ch341a and soic8 clip to dump i believe a bios, but its only 128kb so unsure, and if people want to direct me what software to use to get the full bios, that would be handy.

[Munzab]

Re: Dell Latitude 7470 weird Password problem

i have created another dump with w25q128 this time that generated 16M file

cant upload a 9mb file

https://workupload.com/file/zDTgyX2m5m2

[Vesko356]

Re: Dell Latitude 7470 weird Password problem

cant upload a 9mb file

No, you can.
Try again.

BTW the dump is not OK, read it again, even better twice, and verify and compare each file.

[Munzab]

Re: Dell Latitude 7470 weird Password problem

i did another dump, same size (16,277,216)

[Claudiomfa]

Re: Dell Latitude 7470 weird Password problem

try and report

[Munzab]

Re: Dell Latitude 7470 weird Password problem

thanks for the file

unfortunately a lot of things have gone wrong.

read chip with ch341a 1.29 and got the bin. that has been patched. erased, blanked, wrote the patched file with 1.29 but was not matching. re did with 1.38 and 1.18 and matched but laptop will not boot. power light comes on a second and then off.

re flashed old passworded bin with 1.18 and same problem.

now laptop stuck on not booting. pressing D when starting brings the white, red green blue alternating screens. but laptop is not booting.

thanks