What version of software are you running on the SX20? There were some improvements with regards to Static IP addresses and the Touch in one of the more recent version (TC7.1.0 from memory) - the latest being TC7.2.0.
If you have an active service contract on your device you should be able to download the updated software from the Cisco web site.
If you don't have a service contract, contact the TAC, and reference one of the recent security advisories (ie http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140605-openssl) to get a "free" upgrade to TC7.x as per the "customers without service contracts" section.
Wayne
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Wayne
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