Hey, I have a 16GB class U3 and I tried to run the latest Android 5.1.1 V4, Ubuntu 16.04 mate, Raspbian, Debian, DietPi and none of them seems to work. I used DD command and also tried the win32 disk imager. (Except for android I used PheonixCard. I don't know what to do to make it works.
Thanks
Baskwo