I'm currently still on firmware 2.81. Had no issues with my helix floor until upgrading firmware a few months back. After the backup and upgrade a whole heap of presets I'd made did not function properly, with 'snapshot unable to be recalled' (or a very similar message) being shown in HX edit. What I found was that reverb or delay blocks seemed to be at fault and I had to go through and change them (delete block and add it back in again) and re-save all the presets so they worked again and could be saved and reconfigured in snapshots.
Now I have that all fixed I have recently, in the last 3 weeks, experience my unit starting to cut out, either indefinitely, ie screen still lit, ability to change presets and snapshots etc but no audio coming from the unit, or the unit will stutter, ie I could play a chord and let it ring and the audio being transmitted either to monitors or amp (this happened live at the weekend) cuts in and out in a very random and digital way. There's no manipulation of the sound (warping etc), just like there is a mute switch being flicked on and off intermittently. It feels like this is a processor issue, but I don't really know.
Any recommendations? Should I just backup the unit and update to the latest firmware and hope this fixes the problem?