How to Update Oreo P10 Plus

[hzindabad44]

I can't find update in beta app or in the frimware finder it shows some error pics are attached my Device is south african but currently using it in middle east i am receiving all ota updates excpet Oreo i want to update my p10 plue even if i can get beta version of Oreo build and model is attached too.
Build number
VKY-L29C185B171
Model
VKY-L29
Error
The firmware is not approved for installation

 

[Gamkutopolowk]

http://www.stechguide.com/huawei-p10-plus-b360-oreo-firmware-update/
Method 2 Only

 

[mpokeras]

is this method non destructive?
or I should reload everything?