Just a requiste if someone else has encountered this. last week saterday I flew my APM 2 in a plane all was fine, and today I tried updating firmware and it did not work anymore over USB when clicking on the firmware of my choice, (acro) it would down load from the internet status would change to " reading hex file" that would then go to about 90% and then it will report a " communication error" . I have tested on two different PCs and then I tried over 3 Dr radio ! it works ! but I can not change any settings via Radios just read info.
I then found a few blogs about reflashing the chip sets on the APM board , I reflashed both Mega chip and PPM encoder but still no change.
Anyone any idea ?