Why do my suit upgrades not work?
In some cases when you load your save game the suit upgrades you have bought from the Batcomputer will not work even after you have paid for them. To enable your suit upgrades do as follows:
Load a game that has suit upgrades (e.g. More Batarang Targets) bought from the Batcomputer.
You will start in the Hero Mission Room
Return to the Batcave using the Elevator in the Hero Mission Room. As soon as you enter the Batcave your suit upgrades will be activated.
Go back to Hero Mission Room and load any level. The upgrades will now work fine for all levels.
If you restart the game you may have to repeat the steps above to reactivate the suit upgrades.