Problem with decompressing CSO

Discussion in 'PSP - Games & Content' started by grim_meeper, May 25, 2009.

  1. grim_meeper
    OP

    grim_meeper Newbie

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    May 25, 2009
    Brazil
    Hello

    I recently downloaded GTA: VCS and GTA: LCS from a reliable source. Both were in .CSO format. However, when I put them on my mem stick,though they worked, there was a bit of lag. I read online that this could be fixed by decompressing it into an .ISO file.

    Now I successfully managed to decompress LCS into an ISO using UMDGen and am able to play it without lag. However, when I try to decompress VCS, I get an error.
    Just to clarify, the procedure I follow is:

    File --> open CSO --> Save as ISO
    After just 2% done, I get this error:

    "Error! Next Available LBA position is 2366 but LBA [\PSP_GAME\SYSDIR\BOOT.BIN] position is 2303!"

    An ISO file of around 5 MB is created.

    Is there any way to fix this?
    Thanks


    EDIT: Another quick question. Is it possible to brick your PSP (2000) from a CSO/ISO?
     
  2. Raiser

    Raiser I am mad scientist.

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    Don't know much about this, but I'm guessing you need to repoint some files in the game. Meaning that the file you downloaded probably had some things ripped from it and the ripper didn't repoint any of the files.

    And, no, as an ISO is a normal file, a CSO is the exact same except with everything squished together. You'll *never* brick when dealing with ISOs or CSOs. Only when dealing with flashing your PSP.
     
  3. Spawk

    Spawk Member

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    I prefer to use UMDgen whenever possible myself too... however I have seen this error trying to compress some games also. The way to get around this is to use another CSO compressor. I use a program aptly called "Yet Another CSO Compressor" or "YACC" for short. It handles these games fine.
     
    djalmafreestyler likes this.
  4. soulfire

    soulfire gear... secando

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    i'm also using that one

    it's a nice program haven't got a single problem or error till now ^^
     
  5. dib

    dib GBAtemp Advanced Maniac

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    Just extract all the files, then create a new iso.
     
  6. ampota1893

    ampota1893 Newbie

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    zzzzzzzz!!!

    this was my problem before before but i fix it..,,i think ESPALPSP is the owner of this game..not sure though!!

    to fix this problem,,

    OPEN UMDGEN click open *.cso file name/b] after that go to LAYOUT find \PSP_GAME\SYSDIR\UPDATE\DATA.BIN[/b]

    RIGHT CLICK Move to LBA then TYPE 2304 click OK.. SAVE uncompressed(*iso)..

    thats all..

    i bet GTA LCS

    GTA Vice CIty is a good game ..!!!

    it will works 100%..
     
  7. grim_meeper
    OP

    grim_meeper Newbie

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    Hey thanks Spawk, YACC worked perfectly. Cheers
     
  8. Cavedude

    Cavedude GBAtemp Regular

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    Just find an ISO version, not too hard : P. Well yeah YACC is the best!