What is the correct upgrade procedure from V14 to V15 in 3CX?

The proper procedure for upgrading from V14 to V15 in 3CX involves backing up your current system to safeguard your existing configuration and data. The first step is to create a complete backup of V14 to ensure that you can restore your information if necessary during or after the upgrade process. Following the backup, uninstalling V14 is critical because it clears out the previous version and any remnants that could interfere with the installation of V15.

Once V14 is uninstalled, you can proceed with the installation of V15. After completing the installation, restoring the backup captures all configurations, contacts, and settings from the V14 environment into the new V15 installation, ensuring that you retain your previous operational setup alongside any new features or improvements available in V15.

This method is a best practice because it minimizes the risk of data loss and allows for a smooth transition to the new version. Alternatives that involve direct upgrades without backing up, or skipping the uninstallation step, could lead to complications such as application errors, data loss, or an incomplete upgrade process.