Release details https://docs.armbian.com/Release_Changelog/   Upgrading your Armbian to v19.11.y   This upgrade is changing kernel branch names and first upgrade is not done via regular apt-upgrade process, but you have to login as root or get super user privileges with sudo su. Than do the following: apt update apt upgrade armbian-config -> system -> Other -> select either legacy or current with v19.11.3     Choose latest version of 19.11.x