Update: To quote from the official[Register or Login to view links] Site:
Some cool news today... Dark Killer has released the World's firstPSP RipKit that is designed to work with PSP [Register or Login to view links] for Socom Fire Team Bravo BETA. As time goes on, hopefully more end-users will gear their RipKits towards UMDGEN, and be sure to use our UMDGEN Forum to chat about anything pertaining to UMDGEN. THX!
On this nice Monday morning we'd like to introduce our latest Web site affiliate- namely [Register or Login to view links]! Today they have shared with the entire PSP scene the initial release of [Register or Login to view links], and we are proud to host their officialPSP UMDGEN Chat Forum right here!
To quote from their Web site: "Welcome to UMDGEN.COM- Create PSP "Universal Media Disc" compliant iSO images. If you head over to the [Register or Login to view links] page, you can grab the initial release- UMDGEN v1.00!
PSP UMDGEN currently supports importing FileList.txt files and exporting iML/iMS files. Future updates will likely include features such as File Relinking (ie: you can drop an entire game into the window, relink Pad0 to Pad1, and it will immediately show the smaller total size) and also the ability to Save/Load Projects along with support for 'hidden' files. $ony will likely start doing this in future PSP titles, so the ability to add files to the iSO that don't show up in the TOC may indeed prove useful at some point.
Finally we will review feedback on the UMDGEN Forum from users and resolve any open issues or fix any bugs reported, as well as consider upcoming version feature requests."