Based on what has been said, unless your game is locked out, I would not recommend updating to 5.0. If gree implements the new equipment items for wd, you will not be able to get them. If you don't have them you will find that you will no longer be able to find targets that you can hit. Sounds like 5.1 will add the ability to receive those items. So you might get your game back, but it won't be worth much for attacks and defense in wd, at the least.