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Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Wed Jul 25, 2012 8:25 pm
by diorjets
are two examples of the files i cant extract, using (http://aluigi.altervista.org/papers/bms/arcsys.bms) this script.
can anyone help with this?

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Wed Jul 25, 2012 9:07 pm
by chrrox
decompress the 360 files first using the 360 sdk.
xbdecompress is the exe you need.
it is not legal to share this file.

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Thu Jul 26, 2012 10:14 pm
by jackskellinghog
I apologise for not seeing the other thread, however... This decompression method didn't do anything. Well unless deleting the source file meant something.

Which leaves the answer, maybe this wasn't compressed this way?

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Fri Jul 27, 2012 12:29 am
by chrrox
this does work i am not sure what you are doing.
you need to use the command prompt.

c:\xbdecompress.exe c:\file.pac c:\file.pac.ext
then run the bms file on the decompressed file.

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Fri Jul 27, 2012 10:42 am
by jackskellinghog
Me and a few others have already tried this and as I said above it's not compressed with that.

Any other way of finding out the compression on it?

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Fri Jul 27, 2012 12:39 pm
by chrrox
then you are doing something wrong I have already tested this and it works fine.

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Fri Jul 27, 2012 12:45 pm
by jackskellinghog
chrrox wrote:then you are doing something wrong I have already tested this and it works fine.
Could you upload the decrypted files for me then please? Because I am having great trouble. Thankyou.

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Fri Jul 27, 2012 12:46 pm
by chrrox
no please read the rules.
what could you possibly do with the files if you can not use the command line?
post a screenshot of the error you get and I can tell you what you did wrong.

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Fri Jul 27, 2012 12:55 pm
by jackskellinghog
chrrox wrote:no please read the rules.
what could you possibly do with the files if you can not use the command line?
post a screenshot of the error you get and I can tell you what you did wrong.
http://i.imgur.com/QmEsK.png

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Fri Jul 27, 2012 12:59 pm
by chrrox
yeah you are doing it wrong.
you must type
xbdecompress.exe "SPACE" original pac file name "SPACE" new filename for the extracted pac.
the best way to do that is this
open the command prompt
drag xbdecompress into it.
then hit space
now drag the pac file you want to decompress.
now hit space
now drag the same file again
now type .ext
then hit enter it will extract the file.
then use this bms on the pac files it spits out
once the file is decompressed you must run this bms.
http://hcs64.com/files/fpac01.bms

Re: Cant extract .pac file from Persona 4 Arena (ArcSys)

Posted: Fri Jul 27, 2012 1:02 pm
by jackskellinghog
Thank you so much! Now I am left with XWB files, I presume this is easily convertable.

Used an XWB extractor and got a WAV, the wav file won't work with anything.. Interesting.

Apparently there is a method for encoding the unlistenable WAV to a listenable one.