How to Update Ubuntu 20.04 System – Step-by-step

Updating

2. 2. Updating System

   Then to Update System in Ubuntu
   For the Current Release:

   sudo apt upgrade

   And in case of a suited Kernel Upgrade is Not achieved then you can see: How to Upgrade Kernel on Ubuntu
   When to Setup the Next one:

   sudo do-release-upgrade

   Especially relevant: in case of failure you should dispose of a working Backup!
   For a Non-LTS you should first edit the Config:

   sudo nano /etc/update-manager/release-upgrades

   And Change “Prompt=lts” in “Prompt=normal”.
   Finally, Ctrl+x to Save & Exit from nano Editor.
   To know that sometimes the Release Upgrade may presents some possible Compatibility Issues.
   So for a Safe Result you should instead proceed to a Fresh Re-Installation.
   Last, in case of Kernel Update, to Load the New Setup Reboot with:

   sudo reboot

So Now I am truly Happy if My Guide could Help you to Update Ubuntu 20.04 Focal!