Ok. Panic over. I'm officially an idiot. |
The update hadn't installed. Not sure if it's because it's a cart (apart from Uncharted all my other Vita games are downloads), but, I tried restarting my Vita and when it switched on I was graced with the installing AC3 screen!
Amazed at how much difference it has made. There's now orchestral music that accompanies things. The scene 'escape from the governors mansion' is full of action rather than aimless wondering. The graphics are even crisper. Most of all it isn't broken.
Shocking that Ubisoft shipped this so broken. There must be people with a Vita who don't see that little update symbol, it doesn't exactly force you to update games.