Installation of Ubuntu 16.04 on Jetson TX2

Hi,

I require Ubuntu 16.04 installed on my Jetson TX2 instead of 18.04 that automatically gets installed with the latest SDK Manager. Is there a specific version of SDK Manager I need to use for this? (There are no options for the Target Operating System in SDK Manager 0.9.11.3405, the text already present reads: Linux Jetpack 4.2)

(Host machine is running Ubuntu 16.04.6)

Thanks in advance!

JetPack3.3 will put on Ubuntu 16.04 (or you could use command line flash with R28.3 driver package plus sample rootfs). SDK Manager 4.2 is new and has never had 16.04 available.