It seems you’ve thrown back a whole bunch of rejoinders without considering them too carefully. You might want to think over and edit what you’ve written a bit.
On the not being properly registered, I’ve had a HA replaced by the audi, was just about to walk out of the office, and the original HA that was duly registered for ReSound Remote Assistance got the firmware update through the Smart 3D app, the new HA replacement did not and I recollected that she hadn’t registered the new one with ReSound for Remote Assist. I turned around right in the waiting room, spoke to the receptionist, went right back to the fitting room, the audi hooked the replacement up to Smart Fit, registered it, and then I went back to the waiting room, ran the Smart 3D update and got the firmware update for the replacement, too. So I know firsthand what I’m talking about. Smart Fit 1.9 Now Available As Of 11/23/2020 (and I also own and use a Noahlink Wireless device).
Actually, two separate incidents (not counting my current problems getting firmware updates thru 3D app after DIY messing around) GN Hearing first to support direct Android streaming using ASHA - #45 by jim_lewis (got old vs. replacement mixed up in my description just above) and an earlier problem where audi didn’t register replacment and ReSound support says problem is caused by serial number of bad HA still being in ReSound’s database of HA’s eligible for update, new serial number not being present - maybe ReSound has changed its ways since then…) https://qa-forum.hearingtracker.com/t/remote-assist-smart-3d-app-embroglio-with-quattros/42738?u=jim_lewis
As to companies supporting Noahlink Wireless whose modern wireless HA’s are compatible with the device: Companies Supporting Noahlink Wireless – HIMSA
I see Widex (under development), Phonak, Sivantos, Oticon, Starkey, Cochlear, etc., on the list. Seen any list like that for Airlink 2?
On “bricking” any device, it’s always possible if there’s a power interruption and you’re not using a battery-powered laptop or hooked up to a UPS or, since you might be trying to update an old device to the most modern firmware for Noahlink Wireless, it’s always possible that HIMSA didn’t properly provide for bringing old hardware so far into the future. I don’t know how reversible bricking would be for an Airlink 2 (reversibility varies by device and software required to undo a mess) - I just mentioned that as the only possible downside that I could see to converting an Airlink 2 to a Noahlink Wireless device. It would be great if you agreed there really isn’t any significant downside and a lot of positive benefit to doing the firmware upgrade and moving from 2017 into 2021.
Edit_Update: BTW, in case anyone else wonders what we’re talking about in “bricking” and “unbricking”, here’s the Wikipedia article on bricking (and unbricking) and as I said, the part that I don’t know about is how “unbrickable” an Airlink 2 is, if somehow it were bricked in the first place.
There is no general method; each device is different. Brick (electronics) - Wikipedia