The standard packages are not working as described in this link

You can use the below to install for Jetpack 4.6.

sudo pip3 install --extra-index-url https://developer.download.nvidia.com/compute/redist/jp/v461 tensorflow==1.15.5

Found this new directory under the given link, which was uploaded on 26th Jan 2022. They have 2 versions, one is for 1.15.5 and for the stable version 2.7.0

https://developer.download.nvidia.com/compute/redist/jp/v461/tensorflow/