I have just flashed a new Jetson Xavier with JetPack 4.2.2, and the Ubuntu’s software updater is asking me if I want to update the Ubuntu 18.04 I have just installed. Is this a good idea? If this was a standard desktop machine running Ubuntu 18.04 I would consider it a good idea to keep it up to date. My concern here is that the Jetson Xavier might require a very special version of Ubuntu 18.04 and doing a standard update may break it.
We only did the test to ensure the SW quality on a specific version, thus to do the Ubuntu update is not suggested.
Release upgrades outside of the official installer will likely result in failures.