[Request] Unlock Positivo Sim+

[xtreme9x]

Hello!

This is the first time i'm posting a thread here so please correct me if i'm doing something wrong!

I need help on modding my notebook uefi bios which is a....
 
(i might call it generic because this brand is not as good as the others, and because it's a national brand.)
it's name is Positivo Sim+ 3000 series; 
(i think is 3220 or 3250 i don't know i can't find this information since i removed it's info sticker that was placed in it a few years ago)

So let's get to the point:
#I've discovered that this notebook uses an Aptio IV AMI uefi, and it's factory locked for certain distros, i can only install systems(in UEFI mode) which has a microsoft signature file or something(like ubuntu for example which has this compatibility.)
#I have tried to use VMware on the notebook to run a linux distro(for education purposes) and VWware complained that VT-x was disabled in bios(there is no menu for VT-x activation, so i used AMI tools to discover if this feature is locked in bios, and i did find it as many other features that was locked too!
#I've tried to unlock then all but when i flashed the modded bios i just have no effect.(maybe it's firmware is OEM locked? i don't know)

So i need someone to help me advance on unlocking this bios. I'll provide many information as possible, i'm familiar with linux if in some point it needs to be used for this mod.

Any help would be kindly appreciated!

Thank you!