For the BLE/OTA-Mode, Press and hold CH-UP + CH-Down at the same time and start the Radio with POWER-ON.
I have no more Information how to use the BLE/OTA-Mode.

To show the Version-Number, press and hold PTT and start the Radio with POWER-ON.

Sincerest thanks to Mr Pat. Your most kind to share the information with us. All info and photos are from Mr Pat.

Also remember do not mess with things you do not really understand as if it goes south then warranty and all things are up in smoke.

All Rights Reserved (c) http://www.simonthewizard.com 2013-2025 Unauthorised Use / Or Duplication of this material without express and written permission from this blog’s author is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to simonthewizard and http://www.simonthewizard.comwith appropriate and specific direction to the original content