# Update installation

Updates should only be downloaded and installed by trained and certified Maitre’D resellers and support technicians.

Before installing a service pack:

* Take note of the current version of Maitre’D you are using. 
* Make sure that the system is NOT set in 24-hours operation mode.
* Make sure that the End-of-Day has been done and that there are NO SALES or OPEN TABLES in the current day
* Take a full system backup of the system you are about to upgrade.