If you are already running an older version of JetPack 4.6, you can upgrade directly on the Jetson device using the command sudo apt upgrade after configuring the appropriate NVIDIA debian repositories. Key Features and Components
JetPack 4.6.1 bundles the latest Linux for Tegra (L4T) version 32.7.1 and a suite of accelerated libraries: Announcing JetPack 4.6.1 Release with L4T 32.7.1 nvidia jetpack 4.6.1 download
The NVIDIA SDK Manager is the standard tool for flashing your Jetson module and installing additional SDK components like CUDA, TensorRT, and cuDNN. It requires a host computer running Ubuntu 16.04 or 18.04 . If you are already running an older version of JetPack 4