This guide shows you how to decompress a prx-file manually (with an Hex-Editor) :rules:
For more information visit: recompress PRX's - Thread


First try to decompress your PRX with 'prxdecrypter' --- if it returns something like
Decrypting VSHMAIN.PRX » Output unexpected » Failed to decrypt » Deleted
use this guide to decompress it.

1.)  Open the PRX with your favourite HexEditor
2.)  Select only the data from (offset)0x150 till the end of the file
3.)  Save the selected data as "filename.gz"
4.)  Open and extract the *.gz-archive with 7-Zip or WinRAR and rename it to "filename.prx"
      -» now you have the decompressed(decrypted) PRX


I hope this helps some non-prx-experts
to do theyr PSP-modifying :wink2:
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(corrected: the misspelled "manually" - thanks squee666 ^^)

(This post was last modified: 11/08/2007 09:46 AM by SHIFT-Key.)

Thanks, prx decypter sometimes gives me that error, I'll try :yes::wink2:

(This post was last modified: 10/08/2007 09:27 AM by OZ2.)

thanks for the info
(although i already knew :D)

h901

finally took the time to read this man psptubes addictive

this will hopefully solve future prx decrypting problems great work :)

by the way you misspelled manually

(This post was last modified: 10/08/2007 09:03 PM by squee666.)

Cool, thanks for the heads up

if u read bstronga's compressing thread, u should know this ;)

thanks!

SHIFT-Key Wrote:2.)  Select only the data from (offset)[b]0x150 till the end of the file[/b]

i usually just highlight from from the top to 0x150 then delete that section then save
its easier and quicker than highlighting everything from 0x150 downwards