So I have had the i1 since it released. I have run with dual remotes before and had no issue. Recently I have stumbled upon the dreaded "no signal" issue. Where I have control but no video feed. So I studied quite a few forum posts before posting this. I am attempting to switch my Master and slave RCs. But the Slave RC currently won't connect at all to my i1. As soon as it turns on, it will beep at me with a red flashing light for a bit. Then once it "connects" with my master RC it still has no connection to my device (iPhone 6 running 8.4, also iPad Air 2 with 8.4). Not sure how to try and test if it's my USB port that needs attention or if it's something entirely different. Some assistance would be greatly appreciated. As I am about to lose trust in dji. The fact that we have spent so much money on this piece of equipment and with each "update" we lose something different that we all loved.