modded AMI bios flash fail

[7guns]

hello,
thanks for anyone who is going to read this in advance

so my problem is i cant flash my modded bios 

Error code: 18- secure flash rom verify fail
   

i tried flashing with AFUWIN and when i try flashing with AFUDOS nothing happenes
i enter the command "afudos /imod.rom and when i press enter nothing happenes just the cursor keeps flashing nothing is printed out

so i hope someone could help me with this problem

my laptop model is dell inspiron 15 7559
my bios is AMI aptio 5

[DeathBringer]

Use afudos for "AMI aptio 5"!

[7guns]

Use afudos for "AMI aptio 5"!

i tried using afudos the lateset version for aptio 5 and it had the same result nothing happens and i tried flashing with cmd using an older version afuwin that conatined /gan command and it flashed but the bios doesnt update as i created a new backup of the bios image after the update and all the changes i made are GONE

[DeathBringer]

Does this error occur with native BIOS?
Maybe your laptop's BIOS has the protection.

[7guns]

Does this error occur with native BIOS?
Maybe your laptop's BIOS has the protection.

well i tried flashing the original backup that was not modified by amibcp and it gave me the same result error 18
so i think it might  be right protected so is there anyway to reverse that ?

and i found that this user had the same problem as me and this moderator gave him a fix but it's restricted and i cant download it 

https://www.bios-mods.com/forum/Thread-G...ios-Unlock

[Zibri]

The reason is that the dumped bios has no signature...