AIR custom install badge support

My product functioned for more than a decade with Flash Player and is now working very well as an AIR application for desktop. My install package is downloaded from my website and installed on the user's computer.

I would like to use the "seamless custom install badge" concept because it is one less step in the process of installing the application.

The only support/tutorials I can find for using that process is more than 10 years old.

This link is an example:

Getting started with the custom install badge | Adobe Developer Connection

Are those old documents still dependable, and are they the best information available?