Mine is having the same issue now. Does anyone from Line6 actually have an update on this. Was working fine then all of a sudden after a restart 4 flashing lights. Tried to re-install the update. Went to a past update. Tried the restart with both buttons pressed to no avail.
I guess I have a brick now. No wonder I have just stuck with regular tube and solid state amps over the years. This is way to much work just to simply play!!!!