Flash ROM on version BV6000_blackview_20170223
https://mega.nz/#!gKIAQSSB!CV6nOk_DrFna ... dDkKWm_IyU
While you are trying to update your phone by flashing, please do not update via formatting, this will make all the data missing and even make you phone dead, the usually happened thing was that the IMEI will be missing.
There are 2 ways to update your phone, via OTA and flashing.
Update via OTA, all the data and settings in your phone can be found still in the phone, but there is some inconvenient that you can only do it step by step, that means you can not skip firmware release but install one after the other.
If you don't get the OTA update, I'd suggest to install the next firm release trough Local Update, and once done, check if your phone does recognize another firmware available while using the "Search for Updates" menu.