Hi @user247; Welcome to the DIY category of the forum.
In addition to this DIY Software Prerequisite which you are inquiring about, there is also a DIY Hardware Prerequisite. That is, you will also need to use hardware (a Hearing Aid Programming Device).
Tip: Click any PVC Avatar to find DIY School.
Suggested DIY School reading;
- 02 How to Program Your Hearing Aids
- Choose Hardware-Programming Device for Phonak
- Fitting Instructions Phonak Target
- Noahlink Wireless - DIY User Guide