How to: Update NAV with latest CU

Here is small instruction & links (all in one place) how to update NAV with latest CU

Scenario:

1. Check the latest update 
2. Download DVD.zip with latest CU update
3. Create Backup of SQL DB
4. Create Backup of NAV files (from Program files, Program files (x86))
5. Install the latest update (install, manually patch or auto apply by PowerShell scripts)
   • if you choose Powershell then download Copy-UpdateFilesToBatchDirectory.ps1 from here
6. Reinstall RDC clients on user computers, if Database transformation was done, during update