it probably has to do with whatever base pkg the uploader has. you need the base pkg to make an update pkg. when I did the bloodborne patch, I used the same base pkg I made when I dumped the game, so I didn't have to remarry the update pkg. speaking of which, I learned a few days ago that orbis does in fact encrypt the eboot.bin elf as fself by default, so there's no need to do it yourself. that is unless the bloodborne patcher did it.