Is there anyway you can tell me how to restore my line 6 firehawk fx, i tried the master and tap button while turning it on, what happened was i was installing the update via bluetooth and then it failed, and now it wont turn on it just goes to load error 21, and i use the a and c button to put it in update mode, but via usb i tried the update a million times with no success, please help! : ) if you can