Well, FWIW I'm much appreciative of you being the 1st (that I know of) to post the issue on YT. Believe me, I VERY WELL know how you feel & am sorry you're going thru this.
I know they're looking into the matter, but in the real world, if something you're trying to rely on causes something as serious as you LOSING WORK, sorry, but that's unacceptable.
Truth is, I'm a little more disappointed in the fact that they couldn't get the "app editing" to fly. And though I'm about as "user" as it gets, I honestly think there's a confusion between editing/saving with the Firehawk buttons & editing/saving with the app (Bluetooth) at the same time which was how I was using it when things went south.
Yeah, I'll likely get in line for Helix since it's more akin to the X3's & HD500's & X's, but for now, I stick with my trusty X3's. I think the "answer" is going to be the ability to edit parameters with your feet, which makes most sense, though the app editing was finding its place in me until the unit (Firehawk) kept tanking.
If I can be of some encouragement, I see you use a JTV-59. I'd never desired to jump on the Variax bandwagon from the get go until 3 days ago when one of my students brought in a new, black Variax Standard. SOLID AS A ROCK. Loved it! I rode it fairly hard & came away impressed with sound/playability/construction both the electronics & the guitar itself. Just might have to do one of those down the pike.
Again, I'm so sorry that you got caught in that, & I do hope they can get app editing & button editing to be friends which again IMO is a major problem if not "the" problem. Meantime, we gotta do what we gotta do. :-/
Hope your trails get smoother/happier, bond19.