Hey all. I've been flying my mavic without updates since April or so. iOS app is still on 4.0.8 and firmware on .400. Always put in airplane mode before opening app and never had a problem. I'd like to upgrade to iOS 11 but am worried if this version of the app would still work or if I would then need to upgrade (which I don't want to do). If anyone has had success (or failure!) then please let me know! Thanks so much.