This version of the MIT AI2 Companion has support for our updated "Legacy Mode" connection. More information at: https://appinventor.mit.edu/explore/blogs/jeff/2022/05/28/release-nb189
Note: The MIT AI2 Companion is not a stand-alone application. It is intended to be used with the MIT App Inventor system, a web based App Building tool which is free to use.
You can learn more about MIT App Inventor at http://appinventor.mit.edu