If you have one of these delightful radios, you will find that there is new firmware available to update the three on-board systems. It is suggested that you read the instructions at least twice before embarking on the updates.

Note also, there is a glitch in new system:

When APRS Mute is turned on the complete radio is muted and not just the APRS band. So you need to turn off APRS Mute by click on the Setting menu and then Radio Menu Settings menu. Then in the setting screens click on APRS and then change APRS Mute to Off.

Good Luck