18SZ wont turn on
So... My 18SZ has been working flawlessly for 2 years now. I recently updated the transmitter to version 3.1. After this update, after I leave my radio turned off for more than an hour or so, it wont turn back on unless I unplug the battery and plug it back in. After this it works fine, and will turn off and on normally if i dont leave it turned off for an extended period. Is it possible this is something I introduced with the software update and can be fixed with a re-flash or new update, or is it coincidence and I have a hardware problem that needs to be addressed?
Thanks,
Roger