Help with "X20 PRO" Pirate

[Jalkhov]

Hello community, I hope you are well, I have an issue with a pirate phone, has no mark anywhere, or on the plate, or the battery, anywhere, the phone has a housing with 3 cameras, but in reality the phone only has one, in short, with that introduction, I leave some attachments with information about the phone. I would like to change the operating system, any good, it happens that the one that brings the phone is mined of junk applications, advertising all the time, and applications of dubious reliability, the truth serves any system as long as you get rid of this, I have searched like crazy but I can not find anything about this phone, I wanted to install the same version that has but clean, but I do not know which method of flashing proceed, I hope your answer. Thanks in advance.