If you install a game to the xmb using the pkg method it shows in the game section but if you move the exact same folders and files to the exact same place the game does not show up on the xmb at all. So installing with a pkg file must write to some kind of registry to tell the ps3 to display the game.
Surely if we could find a way to edit the registry and add titles we could simply transfer the games to the right place then add an entry without messing around with pkg files? Maybe it would even be possible to edit the path so we could install the games somewhere different so they don't have files overwritten by hard drive installs or updates (when we can find a way to get them working) because at the moment if we install a game to dev_hdd0/game/BLES12345 the hard drive install feature of that game writes to the same folder as do any updates which is likely to cause issues.
Anyone have any thoughts on this?