The "RJAA UPD" designation typically refers to cumulative updates that address minor bugs and system crashes reported by the community. System Requirements for Build S.154.0.0
Log in to your Autodesk Account and navigate to "Products and Services" > "Product Updates" to download the standalone installer.
AutoCAD 2022 introduced the ability to automate the counting of blocks or geometry. This build refines those workflows to reduce manual errors.