updating SAP CIM model to Version 1.6 or higher

Hi

  i want to update cim model to version or higher in my solman system , recently configured, presently my system consisting of  Model Version (sld/active): 1.6.27  and SAP_CR 7.6 (produced 11/17/2011). how to update the sld and what version to be update, bit confusing , please any body help me

regards

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