Unable to install back nvidia-release-upgrade

Hello,

I accidentally removed nvidia-release-upgrade and cannot install it back:

 $ sudo apt install -y nvidia-release-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package nvidia-release-upgrade is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'nvidia-release-upgrade' has no installation candidate

My environment:

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.5 LTS
Release:        20.04
Codename:       focal

The DGX OS version is 4.5.0


 $ grep VERSION /etc/dgx-release

DGX_SWBUILD_VERSION="3.1.3"
DGX_OTA_VERSION="3.1.3"
DGX_OTA_VERSION="3.1.6"
DGX_OTA_VERSION="3.1.7"
DGX_OTA_VERSION="4.0.4"
DGX_OTA_VERSION="4.0.7"
DGX_OTA_VERSION="4.2.0"
DGX_OTA_VERSION="4.4.0"
DGX_OTA_VERSION="4.5.0"

Any idea how to bring nvidia-release-upgrade on DGX Station? From the documentation, it looks that if I want to upgrade to DGX OS 5 and Ubuntu 22.04, nvidia-release-upgrade is the only way.

Thanks for the help.

Hi @ping-lin.chang1 !

What does apt-cache policy nvidia-release-upgrade say?