Morning. First off: which app are you trying to use? DJI FLY or DJI GO4.
You need GO4 which you'll have to download directly from the software section of the DJI website.
If it's a new iPhone you might have difficulty getting the app to work...
You're completely right!
I forgot that infrastructure monitoring involves having a drone camera pointed at one particular bolt for three hours... in case it unscrews itself.
But here's the really good question... Why would you need to record HD...
'perch' mode... interesting... Let me translate into plain English - that means covert video and audio surveillance of people, you know... the very thing that literally all of us 'normal' drone users aren't allowed to do because it's against...
I always read the release notes first. If there's a new feature or a stipulated software enhancement to hardware: I've always updated to that firmware for the relevant drone. If the notes state "...minor bug fixes and security updates..." I don't...