SonicWall Email Security firmware version 9.1.3 has been posted to mySonicWall.com and is available for immediate download. Customers running 9.1.2 firmware are advised to upgrade to 9.1.3 to achieve improved product effectiveness and security including a patch that fixed reduced effectiveness due to failure of specific MySQL queries in certain instances.
Improvements include:
NOTE: Please see the 9.1.3 Release Notes located in the Download Center for a comprehensive list of improvements.
To locate release notes go to mysonicwall.com and click on Downloads:

Locate your product and expand the view to download the 9.1.3 release note:
mysonicwall.com.
Learn more about upgrading your firmware by visiting How to upgrade firmware on an Email Security appliance.