The VIOS 2.2.3.3 Service Pack has been modified to include the fix for APAR IV60618, which corrects an issue that caused installation of the Service Pack to hang. The only change to the Service Pack is the addtion of bos.rte.serv_aid 6.1.9.16. To determine if you have the fix installed, run the command: lssw | grep bos.rte.serv_aid. To determine if the update you will apply has the fix installed, check for the file U861961.bff in the update directory.