Turn Radio off to start
with radio off hold the PTT and power button together so it goes into UART MODE
when in UART MODE press and hold the refresh button to go into the upgrade mode
it will go to upgrading and update to newest version
once it updates it will shut off go ahead and turn it back on
to check the version un-lock keys by pressing and holding button on top of PTT button
once unlocked short press same button and scroll to version it should be oct 26 thats the latest