My son took GBA Zelda:LTTP to a sleepover last night. Something happened to the cart. I'm not exactly sure what, though. If I understand Jr correctly, he may have slightly pulled apart the body of the cart and snapped it back together. Physically it looks okay from the outside.

Anyway the problem is this: There were save files in slots 1 and 3, 2 was empty. The cart says the saves are now corrupted. Moreover, I can neither erase nor create files in any of the slots. I can live with losing the game saves, but I'd like to know if there's any chance I can salvage the cart itself? If I can open up the cart and remove/reseat or replace the battery does anybody know if that would restore the cart to operation, or did my little man just turn it into a useless chunk of plastic ?