I am using 70mai app version 1.4.0 (NA) on an iphone 6+ with ios 12.4.5, the latest one for the model.
A weird thing is that it does not seem to check any updated firmware.
My dash cam pro firmware version was 1.0.5 when I purchased it last year, and there has been no notification of the newer versions even months after the public announcement of 1.0.7 on this BBS. Now 1.0.8 is up, but no way to download it from the app. What could have been wrong with mine?