This paper examines the file architecture and archival standards of the PlayStation Portable (PSP) ecosystem. It focuses on the "top-level" directory structure necessary for executing digital backups (ISOs) and compressed formats (CSOs), as well as the role of custom firmware (CFW) in enabling archival access. 1. Introduction: The Concept of the "ISO Archive"
A 1:1 uncompressed copy of a UMD. It offers the best performance and compatibility but requires significant storage space. CSO (Compressed ISO): psp iso archive top
: Ensure your PSP is running Custom Firmware (CFW) to support downloaded ISO files. This paper examines the file architecture and archival