OPEN SESAME!!
http://www.mediafire.com/download/bt7l7b378tam874/SEVEN_ARK_REV2.7z
After being really, frustrated, sad, and having lost any hope of getting it to work, I've just went mad and did a padding attack of replacing 0x00 values with 0xFF near the Orphan's Cradle's layout status offset (0x3762) I've found. (See Nemesis save for this).
And, although corrupting character statuses, some databases entries and not allowing return to Orphan's Cradle (game freezes), it did finally unlock the locked door of the 7th Ark. A treasure with 100 gil appears, going forward appears one of those switches... Maybe it will behave like the former four ones, but when you press down, then accept, the game will freeze for around 10 secs then, load the battle arena that would appear in FFXIII-2 vs Proto Fal'Cie Adam (I was going to post about that this saturday) and after a somewhat not polished cutscene a battle will begin against Anima !?, well no, looks like, but it's called Nemesis and doesn't have a image in his database entry.
EDIT: To fight Nemesis, use this save, the other got 'fixed' by the game and it does other things yet to explore. This fixed savegame however, will allow me to find the offset (or one of them if many).
http://www.mediafire.com/download/wff79emfl1e0w4z/SEVEN_ARK_NEM.7z
The entry for the 7th appears and it's really funny to read it's localized text, which it's likely to be complete in the JP version, you will know why 
At the time of posting this, I hasn't continued further.
Enjoy.
I will try to know what actual offset or offsets are the ones that activated it, by removing by half and half the padded offsets.
EDIT: I've improved the grammar of the post, I've wrote it late at night.
What made this possible was the way the Orphan's Cradle layout status code works, it gets a value and, if the value is not valid it will take the most close valid preceding value in the list. So, the Nemesis battle it's the last event of the 7th, nemesis doesn't attack and to kill it fast just use Thunder magic, after that you see a cutscene that clarifies the story behind the 7th and then you get to the beginning and, the battle will not happen again, and entry for Namesis will appear in the Fal'Cie database with the same 7th placeholder text and eveything will behave like the fixed savegame.
The fixed save by unknown reason changed some offsets and the battle will not trigger, instead a cutscene of the players going back to the beginning will happen and four switches will look activated. It seems the actual switch code is broken (maybe intentionally) or, if I put more 0xFF values where there are 0x00 maybe they will work properly.
What I will do is to find the actual offsets that activate the 7th. Then play around with the offsets changed by the fixed save to see if I can unlock more areas and events of the 7th, by putting in values less than 0xFF. |