I have the FC-12 and followed the above video (also read the attached notes) to install firmware v1.06 for the FC (I grudgingly use a Mac). Everything went as indicated until I powered down the Axe-FX lll after the firmware transfer. I counted to 10 and powered on the Axe-FX lll, but after initializing, the FC-12 still showed Failsafe v0.01 on the screen. I tried the entire process again and this time unplugged the Axe-FX lll and FC-12 and still it stayed on the Failsafe screen. I tried one more time and the FC screen finally transitioned to show the new firmware (v1.06 in this case). So it is working properly now, but thought I would pass on this issue in case someone else has the same issue. Seemed to stick on the Failsafe screen. I though there might be residual power through the XLR cable to FC-12 and that is why I unplugged everything, but that didn't initially work either. I don't know why it eventually did work, but it is now. Strange!