SynaMan is designed to automatically update itself when a new version is available. This page provides instructions on how to disable this behavior. Once auto-update is disabled, you will have to manually update SynaMan by logging into the web interface using the admin account and then clicking the link to Check for updates.
Step by step instructions
Stop SynaMan if it is running
Locate the AppConfig.xml file located in $INSTALL_DIR\config folder
Make a backup copy of this file, in case you need to rollback
Open this file in any editor, such as Notepad on Windows or VI on Linux
Paste the following parameter line towards the top: