# 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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.maitredpos.com/maitred/maitred-pa-dss-implementation-guide/pa-dss-requirement-7.2.3/update-installation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.