Thank you Mr forum moderator, and here’s some additional information (dialogue) for @user265;
If you are new to DIY self programming, then a DIY School PDF file named (02 How to Program Your Hearing Aids) discusses the basic steps for DIY. This will likely help you avoid some common mistakes that many of us have stumbled across in the past when self-fitting for the very first time.
Another DIY School PDF file named (Choose Hardware-Programming Device for Phonak) has a list of Phonak hearing aid models along with each programming device that can be used for each model. This takes the guess work out of selecting the correct programming device.
The DIY School PDF file named (Fitting Instructions Phonak Target) will help you to learn to use the Phonak Target fitting software. Yes, it contains links to instructional documents (Target User Guide, and such). There are also references to free video courses which may help further your education even more.
If you end up selecting the industry standard hearing aid programming device (Noahlink Wireless) because it is compatible with your hearing aid model, then there may be a few common glitches that you may run into when using Noahlink Wireless. The DIY School PDF file named (Noahlink Wireless - Instructions For Use) will help you avoid these common glitches/problems.