Where is the current INAV setup guide, not a three-year-old translation? I needed firmware 9.1, the Configurator and Getting Started for the flight controller. Found them at [url=https://inavflight.net]inavflight.net[/url] and that is what I am flashing.
If you are looking for where to start with INAV, open the documentation before you touch PID. [url=https://inavflight.net]inavflight.net[/url] has the 9.1 firmware, the Configurator and Getting Started. I would flash the flight controller from there, not from a cut-down copy.