I am beta testing the new Windows 10 Technical Preview. I love it. It may be a technical preview but it is stable and the GUI is a lot better than the failed Windows 8 attempt, for actual PC users anyway. I have gotten so used to using it that I forgot it is a TECHNICAL PREVIEW. I tried to update my firmware on the bird this morning and it would keep failing at 49%. I got the dreaded beep, beep, beep, beep and the assistant software would no longer recognize the phantom. I have a windows 7 disc but luckily my wife has a macbook air. It recognized my bird, updated the firmware without any problems. Just a word of caution - DONT USE WINDOWS 10 (64 bit build 9926) to update firmware on the phantom. Everything else works, but firmware upgrade does not.