"I just got a Pixhawk 2.4.8 from Fasttech.It reports build date as 24th February this year and a revision 3 chip.

Dirt cheap.No affiliation.I just popped for one on the off chance to see what you get for $53.Banggood have them also I think.…"

"Paul.They do beep at each mode change but the OP wanted confirmation from MAVlink that the mode change had been accepted by the FC.Like the OP I have my Taranis programmed to voice mode changes from the switches which is an entirely different…"

"You may be interested in ScottFlys' posts on this subject over at RCGroups.It's an extension of his Teensy telemetry mod for MAVlink/Taranis which does telemetry,LEDs, and sound.It does what you are asking for.There is a link in the post to the…"

"The 3.2.0 was described to me as "custom" and is simply about enabling telemetry on this board (I think it's a V2.0).I'm not sure where it came from as I am the second owner of this FC and used it as is.I'm not currently using telemetry but I'm…"

"The one with 3.2.1 in flies beautifully.I recently did my first waypoint missions with it so no effect on the GPS or seperate compass.The GPS is the standard one mounted atop the flight controller and compass,again standard is in the dome.…"

"My Quanum Nova (same thing) has been running 3.2.1 for a while with no problems (other than me)."