Converting a directory type game -> ISO type game...

OK, I have got a dump of all the files in my friend's 2GB memory stick...He has got Syphon Filter - Dark Mirror in it, but its not in ISO format...instead, its in a directory format, and its files are put in the main root of the memory stick (in 'SYPHONFI' folder)...it is loaded through an EBOOT file located in a syphon filter folder in the PSP\GAME directory.....Now I want to make an ISO file out of all this, and I dont know how to do it....I tried making an ISO out of all the files in the 'SYPHONFI' folder using UMDGen 3.50, but when i tried loading the ISO, the PSP just said unable to read disc !!....

So how do I successfully transform this directory type game, into an ISO type game ??

Also, I have posted a filelist of all the files in the memory stick dump if you need it...here's the link to the file:

http://www.geocities.com/ahmad.najeeb/syphon.zip


Please help....thanx in advance

umm
i dont think u can post that link here
those files might be illegal

(not sure)
i had the same problem with syphon filter
i just dragged all those files (folders) into umdgen and compiled it
it worked but froze evrytime

i am not posting any copyrighted code....i am just posting the filenames...!! its the code that is illegal, not the filenames.....

i have posted filelists dozens of times in the ps2 scene, and never had a problem...

so is there a solution to this problem ??

Thats not even the dumped iso.
I could tell straight away from how long it took to download lol.
Go download it from www.torrentspy.com or www.thepiratebay.org