Hacking How to Hack/Modify ISO with UMDGEN?

[superspudz2000]

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?


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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.