System Software Version 061.121.221.28308 for the WorkCentre 7525/7530/7535/7545/7556 models is a cumulative update that incorporates several security vulnerability fixes as well as other non-security related defect fixes. This release is Common Criteria certified.
This system software release for the products listed is designed to be installed by the customer. Please follow the procedures in the bulletin to install the solution. This system software version is a full system release so the patch criticality rating is not applicable. You may download the software using the link in the Bulletin or from here.