There is nothing like back to ZTO because even after flashing BVO, you still will be on ZTO only. You can confirm from settings - about phone - software info - service provider software version
You are right. I updated my firmware with another country file, unlocked BL, rooted, instaleld your ROM and everything is working fine!
I appreciate having 3minit battery as part of the rom, it was a pain to install it, and I love the app.
The only thing that isn't working is Viper4Android (the main reason why I rooted!). It keeps asking to install drivers. I already tried making it install twice, tried other apps and modules (Audio library, etc.) and tried changing the .sh file as some XDA threads said. Nothing worked. Everytime I open V4A it says drivers are not installed and tries to do.
Do you have some step-by-step to make it work in S908E? If you don't, do you plan to make it work soon? V4A is the main reason several people root..
Thanks for you guidance!