Hello, 
I just finish to upgrade my bv7000pro from last 6.1 to last 7. That work fine except i lost my 2 imei and when i want to restart on develloper mode (power-), all are in chinese. 
I would like to know how i can change language.
Thx by advance and sorry for my english

Hello blackview user, i have an  old blackview bv7000pro on android 6 for my work. i m looking for switch on 7.0 i would like to know if someone have passed his bv7000pro from android 6 to 7.  is it stable? what issue did you have (like broken micro, gps, etc...). is it better on 7.0 or not really? ...