Once flashed my Frsky X12S with ETX 2.11 (any version) it is imposible to update the firmware of any external module/receiver using the cable (of course, with the pines changed) through the rear bay ...

Thank you for helping FrSky Products to be better! FrSky will be posting pre-release test firmwares here for user testing and feedback . The goal of this program is to find issues/bugs that can be ...