How to update Sophos

Hi,

I have a SBS2011 running Pure Message and the defintions are way out of date but I cannot find where i would update the license or force some sort of update, anybody got any ideas about this one? Here is the details about the product.

Server group name: PureMessage Server Group
Database: Microsoft SQL Server 2005 (9.00.5000.00) SP4 Express Edition

Server: SBS2011
           PureMessage version:3.1.0.0
           Product release status:Full
           Threat detection engine:3.22.0
           Threat detection data:4.68G
           Threat detection identities:1
           Threat detection identity files:vdl.dat
           Total detectable threats:2782787
           Spam detection engine version:2.7.2
           Spam detection data version:2014.5.19.133625
           Operating system:6.1.7601 (Service Pack 1)
           Processor:Intel(R) Xeon(R) CPU X3430 @ 2.40GHz
           Processor description:GenuineIntel Intel64 Family 6 Model 30 Stepping 5
           Number of processors:4
           Address width:64
           Physical memory(Free/Available):19811820/33544408 KB
           Virtual memory(Free/Available):4391904/41734556 KB
           Microsoft Exchange version:14.1
           Microsoft IIS version:7.5
           System default language:2057
           User default language:2057

Thanks
SycamoreIT