that doesn't always mean you got the latest firmware. if you plug in the naza to your pc and your not seeing a notice to update, you most likely have the older firmware. the turnigy plush esc's only got made compatible the last firmware update,,,,,,,
if you never set the throttle range, then that's your problem. that's way back in the build stage, gotta pull each esc lead and plug it inot your throttle port on the rx and follow the instructions