http://support.microsoft.com/kb/2756127
To uninstall an update, run the following command:
msiexec /uninstall <PatchCodeGuid> /package <RTMProducCodeGuid>
Note The <RTMProductCodeGuid> placeholder represents one of the following GUIDs:
| Server | 7348450D-5558-4CA6-8E71-044720D304F2 |
| Console (amd64) | 95241780-B772-4A42-A1F0-8FA951FAF619 |
| Console (x86) | 4FC5546F-AD4A-4C76-9B48-DF11F946EDD0 |
| Reporting | A1A61449-81E0-4C25-82DD-92B0A3CB4E77 |
| WebConsole (amd64) | 20F530CC-FD73-43FE-ABD3-138D140A77A9 |
| Agent (amd64) | 5155DCF6-A1B5-4882-A670-60BF9FCFD688 |
| Agent (x86) | D14AAC0-B9A1-4CEF-B507-23755C1EBE3A |
| Agent (IA-64) | 16499EB-B3D8-4473-9EF4-AB72FDDECD4B |
| Gateway | 7032CF7-3861-4150-8EDD-4DE2540C6E7B |