To update the F64-USB firmware, use HidFlash:
http://www.leobodnar.com/files/SetupHidFlash_v1.0.exe

Follow the instructions shown on the website:
http://www.leobodnar.com/shop/index.php?main_page=page&id=5

1) Make sure to select the correct device to set into bootloader mode. If you are unsure, unplug all USB devices apart from the wheel before continuing!

2) browse the file AscherFormula64-fw2.11.bin

3) flash firmware

