Iso tool

[LunaMoo]

@huntersylch about updating - it's not an emulation bug hence will not be "fixed" - we simply don't have the decryption keys for it, and at this point it's likely we'll never get them.
You can check the ppsspp log after running the update which fails and you should find somewhere there that it asks for one of the missing kirk 7 keys, you can find the list of ones we have in ~ here.
What happens is that, because the key is missing, emulator passes encrypted data when not being able to decrypt it, but isotool doesn't expect that since it would never happen on real psp for which it was written for and instead of printing out some kind of error, it continues to patch the iso with bad file effectively breaking the game.