I just ordered the NVIDIA AGX ORIN 64GB Developer Kit and FRAMOS has specifically stated they only support the NVIDIA version of this AGX ORIN Jetson but with also this version of JetPack.
You can download the files directly from the Jetpack Archive.
However, we would suggest you use SDK Manager first, since this seems to be your first time.
You should be good with Ubuntu 22.04, just a quick tip. If you use SDK Manager, you might encounter a problem that says that there are no Jetpack versions available for the Ubuntu version, this can be worked around by modifying the /etc/os-release file and setting VERSION_ID=“18.04”, this will trick SDK manager into showing you the available Jetpack versions.
Then you can just follow the process and install Jetpack into your board through the USB cable.