first of many thanks to all the developers taking the own time to make apm and arducopter better all the time! its awesome to have access to this kind of info and community that makes UAV stuff accessible to folk like me!
anyway, I have been away for a while, I noticed there over a 1000 posts regarding the release of 2.9.1b, that's piles of reading lol!!!!, so I humbly ask is there anything I should be aware off before I start flying missions again ?
thanks a lot.
But just reading the first post for version 2.9.1 and 1.9.1b should give you what you need.