How to Hack/Modify ISO with UMDGEN?

Discussion in 'PSP - Hacking & Homebrew' started by superspudz2000, Jul 27, 2012.

  1. superspudz2000

    superspudz2000 GBAtemp Advanced Fan

    Aug 23, 2007
    so, Crimson Room USA dosent work. it Crashes horribly on all CFW.

    the Japanese ISO runs fine, so i thought i would
    just put the English Text into the JP ISO, with UMDGen v4.0.
    i simply replaced the "PSP_GAME/USRDIR/DATA" folder.
    it runs, and displays English Text, but there is BAD Graphical Glitches.

    is it because the LBA is different? how do i replace a file without changing LBA?

    bah, i finally got it to work.

    i converted the ISO to a EBOOT.PDP, with "fake_np" program,
    and it worked fine. (ON 6.60 PRO CFW!)

    so i conclude that the ones floating around the net are BAD DUMPS.
    whatever program is used to convert a "Purchased PSN EBOOT",
    into a .ISO to be used on CFW, does not work with Crimson Room.
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