Jetson TX2 "apt-get update" failed.

Jetpack 4.2
TX2 : Ubuntu 18.04
HOST: Ubuntu 16.04

When I using “apt-get update”, it came to be :

E:  can not get http://mirrors.163.com/ubuntu/dists/bionic/main/binary-arm64/Packages,404  Not Found [IP: 59.111.0.251 80]
E: can not get http://mirrors.163.com/ubuntu/dists/bionic-security/main/binary-arm64/Packages,404  Not Found [IP: 59.111.0.251 80]
E: can not get http://mirrors.163.com/ubuntu/dists/bionic-updates/main/binary-arm64/Packages,404  Not Found [IP: 59.111.0.251 80]
E: can not get http://mirrors.163.com/ubuntu/dists/bionic-proposed/main/binary-arm64/Packages,404  Not Found [IP: 59.111.0.251 80]
E: can not gethttp://mirrors.163.com/ubuntu/dists/bionic-backports/main/binary-arm64/Packages,404  Not Found [IP: 59.111.0.251 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.

What should I do to solve this?

That repo does not appear to support arm64. You could eliminate that URL from your “/etc/apt/sources.list”, run “sudo apt update”, and check again.

I don’t know if the repo used to have that content and stopped, or if it is just a general “Ubuntu thing” which was copied in without editing. The error is harmless unless there is a package which actually needs an update and in which that package is only available on that repo (in which case it isn’t always terrible since the update might have been something trivial like a spelling correction, and a lack of a spelling correction wouldn’t hurt too much…or it could be a security update…but the repo is checked against regardless of whether you ever downloaded anything from it or not…the error is that it doesn’t know).

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