Be careful in updating this ROM as as usual Blackview relesed it with Chinese only documentation, a really great service for a company which wants to sell international!
Also the still existing Chinese characters in the path names which are known to lead to issues on non Chinese systems are not eliminated because that would mean a change to be customer focussed, which is contrary to the Blackview policy...
Then - and this is the main issue - in the Chinese documentation you can find "flash:512Gb+32Gb(eMMC+LPDDR3)" as memory information which leads me to the guessing that this ROM is NOT for BV7000Pro as my BV7000Pro has 4GB + 64GB. May be Blackview found a way for a flashable hardware upgrade, but that would be close to publishing a method for time travel...
So be careful not to brick your device by flashing a wrong released and not properly documented ROM!