Brand new Helix LT owner here running into a really frustrating problem.
After opening my LT for the first time, I connected it to my Mac (running OS SIerra), and attempted to update through the Line 6 Updater. About halfway through, it told me that the update failed.
I did read the prompts prior to beginning the installation that said I would receive error messages and helix would reset, but mine never did. Instead, it's stuck on an update screen that reads "Updating UI MCU Firmware, please wait. Do not power off the unit."
I waited about 40 minutes from this point to decide that something was wrong, so I started powercycling, attempting factory resets etc and nothing! It just returns to the same update screen. I'm incredibly frustrated. Has anyone dealt with this issue?