I tried at least x20......tried reinstalling updater..... tried downloading firmware update to computer and then updating the firmware file to the firehawk...tried a few variations....had the best luck trying to update from firmware file on my PC.....progress would go to about 90% and stop......whenever I tried from the server it would almost stop immediately......I haven't tried a different USB port yet.....when I 1st got firehawk in July there was a immediate firmware update ...it worked via Bluetooth and I had no issues.....for some reason the update never popped up for me to do it that way.....and I tried doing it via PC.