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Discussion in 'Sony PSP - Mod and firmware discussion' started by stergios0, Aug 3, 2007.

  1. stergios0

    stergios0 Guest

    Hi gyus.I need help.I just bought a PSP and i my version is 2.71 and i download a game that is CSO file.I have the cable and i connect to pc and i put the file inside and it doesn't play.Can u tell me how it works?
  2. btjl90

    btjl90 Regular member

    Jul 23, 2007
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    if ur firmware is not custom firmware, u cant play cso/iso.

    if ur psp tells u that u are 2.71 <-- without any alphabets behind it, then u are NOT on custom firmware

    u have to first downgrade ur psp to 1.5 and flash it to firmware 3.40 OEA or 3.52 M33.

    search the forums for more details

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