It seems many of us have had problems getting the tqi link app to work. Heres what I did. Use a differnet trans to avoid unbinding while running. So just bind the trans. to the tree and update it. to start, always traxxas link app first, then trans ,make sure icon turns greeen on ipod,then turn on tree quickly,check too see green icon for tree on ipod, then press set on tree untill 2 beeps sre heard.then turn on trap within 10 seconds, check diagnostics and all should be working now, the only difference with this method is you will need to link the tree to the trap each time by pressing tree set button as described , Good luck !