If so, you need SAP Universal ID. In a few months, SAP Universal ID will be the only option to login to SAP Community. Without it, you will lose your content and badges. If you have multiple accounts, use the Consolidation Tool to merge your content.
We have recently installed a new ERP 6.0 system. Should we use the "SAPehpi" tool to install the EhP 4? Is Solution Manager is mandatory for installing EhP 4 i.e., to generate the XML file which provides the stack information?