The upgrade of a 12X to DSMX is still being handled by Horizon Hobby.
Contact Product Service to start the process:
https://www.horizonhobby.com/content...service-center
Tell them you want to upgrade your 12X to DSMX. They'll take it from there.
Andy
Last edited by AndyKunz; 09-28-2018 at 05:58 AM.
Reason: Fix link