I got a ZF3 Deluxe from Italy, is TIM branded, and stuck on MM 6.0, no updated released for this brand, so a friend of mine told me there is of course android 7 for ZF3Deluxe, so i wanted to manually upgrade system to 7.0 Nougat, i downloaded the Stock ROM from asus (2.15ghz cpu, i've checked of course) but when i try to flash it from the Stock Recovery i get this error (see the attachment) i also attach the software informations, (looking at the error i receive it may see the archive is corrupted, but i've tried to download it from Asus many and many times)