Check the Cisco Product Upgrade tool at www.cisco.com/upgrade to determine if you are entitled to any major or minor version updates of your current LMS product.
If your contract permits, I suggest you to look at LMS 3.2 which is the latest release.
The upgrade for 3.2 can be found but it is tricky. It is actually a download for the trial version of 3.2 and it recognizes the license currently in use and does the upgrade.
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