I did a search before posting and there are hundreds of posts "Spark disconnected mid flight" many with a fly away that is very worrisome but didn't see any after 2018 so the fly away thing caused by this might have been fixed in an update. This isn't my problem yet because mine sits on the pad flashing yellow with the screen on my ipad mini "disconnected" upper left and won't connect at all.. I shut down and did the sequence 3 times (start the spark first then the controller) with no green light. My ipad mini did an auto ios update last night , could it have messed up the GO4 app ? I'm pretty sure this is disconnect between the Spark and controller that is hard wired to the ipad. So do I dump the GO4 app and reload ? or do a reconnect with the Spark and controller. Thanks for looking and advice.