forums.ps2dev.org

[OverLorD]

Hello all 'im a noob in the psp scene and i wanted to know if there was any software tu decompile and/or decrypt .psar and .psp files (soft running under windows xp )

Thanks a loot for your whole help!!!

[PspPet]

No. not software that ONLY runs under Windows XP
Programs require a homebrew capable PSP (version 1.0 or 1.50 firmware). The PSP has special hardware to decrypt files.

There is a sample in the PSPSDK to decrypt .PRX files (the typical format of .PSP files)
http://svn.pspdev.org/filedetails.php?repname=psp&path=%2Ftrunk%2Fpspsdk%2Fsdk%2Fsamples%2Fdebug%2Fprxdecrypt%2Fmain.c&rev=0&sc=0

There is a program called "PSAR Dumper" that will dump the .PSAR data for the known update programs
http://forums.ps2dev.org/viewtopic.php?t=2883

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> Hello all 'im a noob in the psp scene...
Then you should probably ignore the above advice ;->
This stuff is hard to figure out. Don't be one of the idiots who think a 5 minute hack is going to open up the PSP.

If you don't already have a homebrew capable PSP, you probably shouldn't be asking these questions.
If looking for an exploit, please ask elsewhere.