Firmware for RSB S2:
 * http://support.fujitsu-siemens.de/Download/ShowDescription.asp?SoftwareGUID=6DB401B3-B0BD-43CB-A3AA-6278B23FBCB0
 * http://support.fujitsu-siemens.de/Download/ShowDescription.asp?SoftwareGUID=4EC6401E-CA1A-47D8-A178-C75D91665CE2
Use the first link for a patchable firmware, the second is just an "update"
firmware which will not touch user settings and rights...

Documentation:
 * http://manuals.fujitsu-siemens.com/open.php?ID=4384

Software:
 * http://download.fujitsu-siemens.com/prim_supportcd/start.html
 * http://download.fujitsu-siemens.com/prim_supportcd/SVSSoftware/Software/Deployment/PRIMERGY%20Scripting/PRIMERGY%20Scripting%20Toolkit.msi
   (DOS utilities (spman.exe))