My brand new APM 2.6 was working yesterday, and now when I plug it in to multiple computers with multiple cables it doesn't even register over USB. Here's a summary:
-The board lights up when connected to USB, the red and blue lights flash, but the TX and RX dont' light up.
-The APM does NOT show up in the Device manager, the computer has no response at all to the board
-I tried reflashing the USB encorder chip (ATmega32U2) using instructions here:http://copter.ardupilot.com/wiki/common-ppm-encoder-apm2x-atmega32u2/. The "Flip" program is unable to recognize the chip, and throws the error "AtLibUsbDfu.dll not found.".
I've emailed 3DR tech support, no response yet, please help!