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Mr. Shizzy · 08/08/2008 10:57 AM

This should be stickied...

I had to look all over to find this thread again.

Kratosjohn · 08/08/2008 11:39 AM

I bet most of you don't know how to compress a prx manually along with a hex editor Hero

osnap1584 · 08/08/2008 01:19 PM

Mr. Shizzy Wrote:This should be stickied...

I had to look all over to find this thread again.

schmilk had these instructions in his 3.90 to 4.01 prx convertor release.

kevinsturf · 08/08/2008 02:10 PM

thanks alot dude

vinrose67 · 08/08/2008 10:15 PM

bro matchung teach me this trick source: http://endlessparadigm.com/forum/showthr...?tid=12654

27/01/2009 05:01 AM

ErikPshat · 27/01/2009 05:01 AM

Excuse, me have asked to tell more in detail, as decompress recovery.prx.

1. Open the PRX with your favourite HexEditor.
If the file starts with ~PSP, the file means is packed.
If in Offset: 0x150 there is an offset 1F 8B, it means archive Gzip.

[Image: 4ba672f07ee2.png]

2. Select the first 150 byte

[Image: 73b6a01911ce.png]

3. Press key Del (Delete), to delete the selected area.

4. Press in the menu "File » Save As..." and save a file as recovery.prx.gz

5. Open and extract the *.gz-archive with 7-Zip or WinRAR. Now you have the decompressed (decrypted) PRX.

6. If you see ELF characters in the file beginning, means before you - decripted & decompressed a file.

[Image: 912da1db168f.png]

Quitacet · 29/01/2009 06:11 PM

Can I use this to decrypt/decompress the recovery.prx of 5.00m33-6 Gen-A fw? I tried but Winrar can't extract the file I saved after deleting 0x150.

ErikPshat · 30/01/2009 06:55 AM

All is normally extracted. Do not forget, it is necessary to save with *.gz extension. I now decompressed Recovery&Satelite 5.02 Gen-A.
Here still the information for the hint:

[Image: 1e560feeb200.png]

Quitacet · 30/01/2009 05:58 PM

ErikPshat Wrote:All is normally extracted. Do not forget, it is necessary to save with *.gz extension. I now decompressed Recovery&Satelite 5.02 Gen-A.
Here still the information for the hint:

I tried what you said.

1. I deleted the first 150bytes.

2. I saved the file as recovery.prx.gz

3. TRied to extract the saved *.gz file but winrar says "The archive is either in unknown format or damaged."

I'm using Hex Workshop also.

May I request that you send me your decrypted Gen A recovery.prx and your satellite.prx. I want to edit some text so they will be customized.

Thanks very much.

Threaded Mode \| Linear Mode HowTo - manually decompress PRX's (not for PSP experts ^^) only if prxdecrypter returns an error !!!
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