No I see but the problem is that I cannot flash anything other than the OS itself via host computer because of the nasty Ping check over my proxy on Jetson SDK Components. You can see that it “is going to be fixed on the next release” SDK Manager "Internet connection check failure"
It becomes more than a nuisance to work thru all these issues and the inability to use whatever version required for full compatibility of any application I could potentially need. I should be able to install TensorRT on the AGX itself without sudo apt install nvidia-jetpack. (Or with it for that matter but with an option like --install-such-and-such-packages)
EDIT: SDK Manager is updated, linked ping error is gone thankfully. I had to install JetPack 4.5.1 from scratch. One workday is wasted on this unfortunately.