Reconputer j2022 Xavier 16 gb, can I upgrade Ubuntu to 22.0x

So bought a reComputer j2022 Xavier, which came with a pre installed jetpack 4.6 and Ubuntu 18.04. These are both outdated, is it possible to upgrade to higher jetpack as well Ubuntu? I am new to this sorry if I say something wrong. I want to use humble ros2( which need Ubuntu 22).Thanks in advance

So did some more research, is also possible to just upgrade Ubuntu to 20.04?

Hi,
You can install jetpack 5.0.2´╝îwhich is the latest version.