I recently got a RTR Eachine Falcon 250 Pro, VR-007s and absolutely love them! The problem I have though is that I cant change PIDS, rates, and flight mode switches easily. I can use a USB cord to connect to a PC (Win 10, have tried with others, same result) and it works (cleanflight) for about ten seconds. nothing noticeable happens to the quad, but on the PC no more data comes up. I immediately noticed this when I tried switching tabs and it wouldn't load. The thing is though, cleanflight doesn't recognize any disconnection at all. I figured I would just have to short the bootloader pins and reinstall firmware on the naze but Eachine glued the OSD right on top of the naze right over those pins with some yellow stuff that doesn't want to come off. I haven't seen this problem before in all of my google searches.