https://repo.download.nvidia.com/jetson/ for all suites (t210, common, etc) has been down for r32 dist (used for 32.3.1) for over a week now. The packages remain in the pool but InRelease and Release for this dist is missing so using apt results in an error.
This has happened before and never been corrected with earlier releases as well.
Please correct this issue and prevent it from happening in the future.
Please read the original post again…
Regardless I will teach you how an apt repo works. 32.3.1 BSP uses the r32 dist. The Release file for that has gone missing (along with the Packages files, etc).
For debug purposes consider using a web browser to the repo. Those repositories are just web pages. This implies that other web issues can get in the way, such as DNS or routing, and seeing what a web browser responds with can give clues as to the actual cause.
Nvidia developers corrected this issue with missing Release, InRelease, main/binary-arm64/Packages and other apt repo contents for the r32 dist within the past 6hrs.
Thank you