Leaked Sony PSP UMD Tools From PSP's SDK!
Somehow the PSP UMD Tools (also known as UMD Composer) used by licensed developers have apparently found their way onto the Internet this week. If you aren't sure what PSP UMD Tools are, they're the tools used by licensed developers in order to actually create PSP UMDs. The 10.8MB archive contains System File Editor v1.0, UMD Image Checker v1.10, UMD Image Generator v1.2.7, UMD Stream Composer v1.5, and UMD Stream Viewer v1.5. It's certain that the files have been leaked from the official SDK.
With these applications you can create both PMF Files, and MPS (UMD Video) files, but as most of the release notes and readme's are in Japanese, you probably haven't got a chance making a UMD for yourself. The files all come packaged with PDF files that act as the readme files with instructions on how to use each of the applications.
You can't find these anywhere else and the only way to obtain these files is if you're a developer working at Sony so that makes these files very rare!
I found this at crazy4warez, not sure if it's okay to be here. I know I'll eventually find out though!
5 years ago