I followed this guide How to Install JetPack :: NVIDIA JetPack Documentation.
After changed file /etc/apt/sources.list.d/nvidia-l4t-apt-source.list
deb https://repo.download.nvidia.com/jetson/common r35.4 main
deb https://repo.download.nvidia.com/jetson/t194 r35.4 main
How to solve this problem? Thanks.
and run sudo apt update. I encountered an error
Ign:1 https://repo.download.nvidia.com/jetson/common r35.4 InRelease
Ign:2 https://repo.download.nvidia.com/jetson/t194 r35.4 InRelease
Err:3 https://repo.download.nvidia.com/jetson/common r35.4 Release
Certificate verification failed: The certificate is NOT trusted. The certificate chain uses not yet valid certificate. Could not handshake: Error in the certificate verification. [IP: 118.69.17.196 443]
Hit:4 http://ports.ubuntu.com/ubuntu-ports focal InRelease
Err:5 https://repo.download.nvidia.com/jetson/t194 r35.4 Release
Certificate verification failed: The certificate is NOT trusted. The certificate chain uses not yet valid certificate. Could not handshake: Error in the certificate verification. [IP: 118.69.17.196 443]
Get:6 http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease [114 kB]
Get:7 http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease [108 kB]
Get:8 http://ports.ubuntu.com/ubuntu-ports focal-security InRelease [114 kB]
Reading package lists... Done
E: The repository 'https://repo.download.nvidia.com/jetson/common r35.4 Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'https://repo.download.nvidia.com/jetson/t194 r35.4 Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Release file for http://ports.ubuntu.com/ubuntu-ports/dists/focal-updates/InRelease is not valid yet (invalid for another 369d 14h 46min 49s). Updates for this repository will not be applied.
E: Release file for http://ports.ubuntu.com/ubuntu-ports/dists/focal-backports/InRelease is not valid yet (invalid for another 369d 13h 28min 36s). Updates for this repository will not be applied.
E: Release file for http://ports.ubuntu.com/ubuntu-ports/dists/focal-security/InRelease is not valid yet (invalid for another 369d 14h 11min 5s). Updates for this repository will not be applied.