That is reassuring to know.
Spot on, troubleshooting. I tried different approaches also those you mentioned. Sorry not to include those trials.
I followed instructions as to reset, on and offs, offline/online firmware updates. It still persist on to a boot failure and freeze.
Because it happened within the few minutes of first time plug to an amp I suspect it's a factory defect.
I also want to mention login to line6 updater took few hours before it reaches an update.
What should I do? Thank you for your answer.