Launch the Browser app from the App List and navigate to http://autohack.org/root. If the Browser app does not exist in the App List, please follow the instructions in this YouTube video to enabled it. For Civic 2019, please refer to this YouTube video.
Click the Start button and enter the authorization code.
Wait about 3-5 minutes and Honda Hack app should be installed to your unit.
After the head unit is rebooted, launch Honda Hack app from the App List to install other apps and tweak the system.