Rep: ( 32 )
From Blackview engineers face ask our customers not to install the update to 7.0 locally by downloading the update from third-party sites, and wait for the official update over the air.
We have not tested this update to be installed locally on a different firmware. We worry about what would users were more stable firmware update regular way through the air. We care about your security, good and reliable operation of your smartphone.
I've tested this update and only found one bug, no 4G o2 UK. The ROM appears quite messy, so may be beta ROM. Also you can not roll back to Android 6 without a format and download with flashtools, so make sure you have a full TWRP backup.