Jetson AGX Thor: upgrade JetPack and fix jtop detection

This tutorial walks through a JetPack 7.2 upgrade with NVIDIA SDK Manager running directly on a Jetson AGX Thor Developer Kit. Thor acts as both host and target, so the demonstrated process needs no separate host computer. The presenter cites release notes that allow a JetPack 7 machine to upgrade without a full reflash.

The setup starts with the Ubuntu arm64 .deb download, an apt update, and installation of SDK Manager. A NVIDIA developer account is required to sign in. The presenter configures the upgrade environment and notes that JetPack 7.2 is the only supported version in this SDK Manager release. The terminal tab shows the installation activity. After the upgrade, a reboot triggers a firmware update. The final checks report Ubuntu 24.04, Jetson Linux 39.2, and JetPack 7.2 installed; the initial BSP version shown was 38.4.

The last section addresses jtop detection problems after the upgrade, including an unrecognized GPU. The presenter says its suggested fix is incorrect on Ubuntu 24.04 and follows option four in the jetson_stats repository instead. That method creates a virtual environment for jtop. Existing users of that method can use its upgrade procedure, though the demonstration removes the environment and installs afresh. A reboot may be needed afterward, and the presenter recommends the health command for troubleshooting.