Interesting - was curious about if Phonak would have firmware upgrade supported via mobile phone app either iOS or Android. Here is the blurb, in case there is a firmware update to correct the lisp, or for any reason, that you were mentioning.
Firmware update in the myPhonak app
Can I get a firmware update in the myPhonak app or do I need to visit my hearing care professional for this?
No, you can’t do a firmware update of your hearing aids yourself. The firmware update must be done by your hearing care professional in their office. The firmware update cannot be done during a Remote Support session.
So, it can be done, but by the professional.
Mixed of desktops and laptops, I have a Gravis Ultrasound Classic card (unfortunately its ISA-slot based) ... - I must be a dino.
Running on my DesktopPC -
MX-23.4 AHS with latest Kernel:
6.12.17-1-liquorix-amd64