Download the Exchange Server 2010 sp2 from:

I got a problem during the service pack 2 installation for Exchange 2010 and it is easy fix.

ERROR: Setup cannot continue with the upgrade because the ‘console’ (Windows Small Business Server 2011 Standard Console) Process (ID: 6756) has open files. Close the process and restart Setup.

Solution: Close the SBS Server Manager console and click try again, i will fix the issue.