The firmware loaded fine but I can't get BFGminer to compile that driver. I think it's due to the .o file but I'm not sure how to fix that.
It seemed he used an older version of bfgminer.
You can use the normal version and just change 2 lines:
#define MAX_WORK_COUNT 8
#define LATE_UPDATE_MS ((int)(0.5 * 1000))
These changes did a good job for me. I never saw a duplicate/idle message anymore since that, even with the board-firmware from before. (Including a slightly higher hashrate)
His new firmware for the board didnt work so well for me, the old one is faster at even lower frequencies, but i still have to debug it a little further...