I have a device I have used from Day 1 on B4A without issue...in fact it usually works best due to my other devices having MTP and Kies junk kicking in and messing up the connection. Suddenly yesterday afternoon it stopped being seen by ADB. I tried Restarting the ADB Server and Restarting USB without it doing anything. The other devices still work fine. Is there any reason for a device to suddenly not work? When I plug it in I can connect to the SD Card and it reports Debugging active when docked. It just doesn't show in the device list.