I’m running the Unify controller software on the Raspberry Pi.
For some reason, I encountered an error message when updating my Linux operating system via the sudo apt-get update command:
E: Repository 'https://dl.ubnt.com/unifi/debian stable InRelease' changed its 'Codename' value from 'unifi-6.0' to 'unifi-6.1' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
Here is how I solved this:
sudo apt-get upgrade -y
Entering this command started to upgrade unify 6.0 to 6.1 on my Raspberry device.