Can't update my ROG phone 5s OS

[metti_amiri]

Since I bought my ROG phone 5s I can't update the phone os automatically from setting or manually from website why?

[Bobby_ROG]

@metti_amiri 

Hi please provide a screenshot of the SN on your phone. Thanks

[metti_amiri]

(photo edited by Bobby_ASUS)

[Bobby_ROG]

@metti_amiri 

Hi after checking your SN on server we found your device was flashed from CN from WW, thus unable to receive FOTA for sure. Thanks

[metti_amiri]

• Hi Is it possible to update system with CN manual Update from the site and have English language for system? Thanks

[Ibrahimado]

Did you update the phone or not?