P.S. If you’re on DEX/CFW, convert your ISOs to PKG and install to internal for slightly faster load times over folder format.

: Use an FTP client (like FileZilla) to connect to your PS3 (via multiMAN or webMAN). Transfer the files to /dev_hdd0/packages . Then, on the PS3, go to Package Manager > Install Package Files > PS3 System Storage . A Note on Licenses (.rap files)

To understand why an "Archive Manager" is necessary, one must understand the file structure. On the PS3, digital content (games, DLC, updates, and homebrew) is packaged into .pkg files. While the end user sees a single file, the PS3 filesystem sees a complex directory structure of encrypted files, licenses (RIF/RAP), and ISO images.