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RockpiN10/FAQs

General

Radxa APT public key is not available

When I try to run apt update, i get following error:
$ sudo apt update
...
Err:21 http://apt.radxa.com/bionic-stable bionic InRelease                           
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B99C4BEFEC47E96E
Get:31 http://ports.ubuntu.com/ubuntu-ports bionic/universe Translation-en [4941 kB] 
Get:32 http://ports.ubuntu.com/ubuntu-ports bionic/multiverse arm64 Packages [126 kB]
Get:33 http://ports.ubuntu.com/ubuntu-ports bionic/multiverse Translation-en [108 kB]
Reading package lists... Done                                                                                                             
W: GPG error: http://apt.radxa.com/bionic-stable bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B99C4BEFEC47E96E
E: The repository 'http://apt.radxa.com/bionic-stable bionic InRelease' is not signed.
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.
...

The reason is the public key used before is expired. You can execute the following command to get the new available.

sudo apt-get install -y wget
export DISTRO=buster-stable
wget -O - apt.radxa.com/$DISTRO/public.key | sudo apt-key add -
sudo apt-get update