Similar issue here with a 4 month old unit. Worked flawlessly until the firmware update. Since then, really inconsistent lights (solid for a few hours, then flashing, then solid for a few hours, then flashing etc) and, after a 16 hour charge, I get less than 30 minutes before the transmitter dies. Have raised a ticket and been told to try the firmware update again. Will do so, though I doubt it'll make a difference. Don't think I've ever encountered a firmware update that so comprehensively buggered up something that worked so well before applying it. And I work in I.T. Very unimpressed.