Use supported update channels
Operating systems and apps should update through their official mechanisms.
Back up before major upgrades
Ordinary updates are usually routine, but major version changes are a sensible point to verify backups.
Do not postpone forever
Unsupported software can lose security fixes and compatibility.
Check critical app compatibility when needed
Specialized school, work or accessibility software may need confirmation before a major upgrade.
General consumer technology information only. Interfaces and menu names change. Before resets, reinstalls, storage changes or other major actions, verify that important data is backed up and use current manufacturer/service-provider instructions.