Hi,
My J30 came pre-installed with Ubuntu 20.04 and Jetpack 5.1.1. I am not using a virtual machine. I read in an nvidia topic that it is possible to upgrade from 5.1.1 to 5.1.2 without reflahing. This is one of the activities which failed with the previously noted error message. I did however manage to install the docker image in which the image identification inference software runs and it works.