M
MrAdults
Guest
Well, like koral said, that would be more Vash's area. You could probably manage to inject replacement GMO's over the original ones without any knowledge of the containing filesystem, if you kept the GMO the same size or smaller than the original one, which would just be a matter of a hex-edit copy-paste job. But even that wouldn't be for sure, since the filesystem retrieval may expect a fixed size and mess up somehow on the GMO parsing if there is garbage data at the end of the real GMO. But since texture data is not compressed and pretty fixed-size, you could at least directly overwrite those files in the main ISO if you kept the same bit depth and resolution, since that would maintain the exact data size. But you'd still have to have something to generate the GIM files (I know there are tools, including an official Sony one meant for themes, but I know nothing about any of them).
All of this is moot where I'm involved, though, as I don't even have an original Dissidia ISO to work with.
And I don't have a lot of interest in re-finding what Vash has probably already found, unless he just wrote a bruteforce GMO extractor. But given the filenames, it looks like he went to the trouble of actually determining the filesystem specs.
All of this is moot where I'm involved, though, as I don't even have an original Dissidia ISO to work with.