I've been to these forums many times in the past. I'm just back again because I wanted to mess around on my electric the other day, hoping there might have been a development here. I did create a support ticket. Looking back at my support tickets, apparently I get the itch to play guitar once every three years. Haha
The Spider IV 75 was great when it worked. A year after I got mine, I installed a newer version of the firmware. It started randomly turning off and restarting while I was playing. The intervals between turning off grew closer together. Finally, it quit turning on altogether. Line 6 support was of no help. My amp has been an expensive cinder block for a decade now. Yes, I'm still bitter.