PSAR Dumper v0.2Ae For PSP 

PspPet has released a new version of his PSAR dumper for PSP. This is a legal tool to help reverse engineer the PSP, and should be used for personal use only.  According to the author:

This new version will decrypt the 2.6 PRXs!!! The dumped files are same as the files in PSP NAND Flash except the "SIG check key" is not generated.

Advanced expert tool.

A tool to help legal reverse engineering of the PSP system components.

Extracts the contents of the update data file, and saves them as separate files on memory stick.

Legal Note:
    The files you download (ie. the updater EBOOT.PBP) and the files
    extracted by this tool (ie. the contents of the OUT and OUTX folders)
    are all Sony copyrighted material !!

    You can use them under certain "fair uses".
    Do not post these files on the Internet.

    Use this tool at your own risk!

    The tool itself contains no Sony copyrighted material.