Did you backup your Gx radio with the new PPS BEFORE you used the firmware update program? If so, then everything should have remained the same with exception of the new features. I'm starting off with the most obvious question before going deeper. If you did back it up, bring up your profile in the new PPS, review it to make sure that tone settings, zone and switch parameters are the same. Then try reprogramming that profile into the Gx. See if that works.