Unlock Bios Password dell latitude 5420 bios locked

[almussafer]

Device Model

Dell

Serial Number

1

Hello, my friends, please help me to unlock this BIOS
Dell Latitude 5420 gdf40 la-k491p rev 3.0

 

[almussafer]

Hello, my friends, please help me to unlock this BIOS
Dell Latitude 5420 gdf40 la-k491p rev 3.0

service tag DYT01F3

 

[Vahab Hemmati]

Hello, my friends, please help me to unlock this BIOS
Dell Latitude 5420 gdf40 la-k491p rev 3.0

this file don't show any password on unlock service !
is there any other bios file on the board ?

 

[almussafer]

this file don't show any password on unlock service !
is there any other bios file on the board ?

THIS IS THE EC FILE

 

[Vahab Hemmati]

THIS IS THE EC FILE

this file also don't contain password !
are you sure your backup files are correct ?