Just wanted to jump in and say that I had the same issue working with a Macbook Pro trying to update my RC to 1.3. I tried a USB stick that I formatted using Disk Utility into Fat32 and the RC would not recognize the stick. I ended up grabbing a USB card reader that would accept microSD cards. I formatted the micro SD card using the camera on my inspire and then transferred the download of the 1.3 firmware update on it. The controller accepted that update.Glad to hear it, have fun, fly safe....