FBV3 update issue in FBV Controllers (MKI / MKII / 3) Posted June 9, 2016 Sorry for the double post.An update:I called Zzounds (where I ordered the FBV 3) and they agreed that the FBV 3 should work, but I'll be exchanging it for a new one.However, afterwards I called Line 6 and they told me it was a firmware issue (in regard to the backward compatibility with things like the Line 6 Spider Valve Mkii). I updated (there were no problems locating the device or updating it) - it had to be plugged direct into the USB port of a computer (not to the hub, which they told me doesn't give enough power, just an FYI for those of you having trouble updating).I'm still experiencing the same issues as before - even worse, actually. It won't even turn on unless I turn the amplifier on and off several times and wait a few minutes and I cannot get any foot switching to occur. If you hit any of the FS1 - FS5 switches - it shows some strange error of FBV 2 and asterisks and other characters. Although I'm going to attempt exchanging the unit in the slight chance it's defective, given the fact that it updated successfully, my guess is that the FBV 3 is not compatible with the Spider Valve Mkii, and there may be potential issues with older devices.