The instant solution. Dc-pheonix , use it , buy 15 credits worth 15 euros ,flash with firmware. Then rebrand your Honor 8 using the guide here on XDA. Njoy.
I'm on the same version. As informed by Honor on facebook Nougat for the Honor 8 Premium should be available within the next few days. I think you used the rollback tool from Nougat Beta to MM, right? I got the same version no. instead of C4...