GameCenter & HDR Enabler for iPhone 3G(S) iOS 4.1
Developer Macusercom, has created a tweak for the iPhone 3G and 3GS on iOS 4.1 which will enable some options that have been both removed and limited in the latest iOS 4.1 update. If your an iPhone 3G user, and have upgraded to iOS 4.1 you may have noticed that GameCenter is not available. The iPhone 3GS does however have GameCenter, but Apple failed to include the HDR capabilities it has given the iPhone 4, in iOS 4.1.
With this tweak you will be able to enable GameCenter on the iPhone 3G, as well as enable HDR Photography for both the iPhone 3G and 3GS. You MUST be on iOS 4.1 for this to work, so if your not already on this firmware, do not lose your jailbreak just to update. The Greenpois0n release is right around the corner, just be patient.
Some of you may be asking "Wait, what? iOS 4.1 is required? How is that possible if we don't have a jailbreak?". While indeed, there is no official release for the newer models, the iPhone 3G and 3GS have been jailbroken via redsn0w
by the Dev Team and Sn0wbreeze, released by iH8sn0w. There are quite a few requirements, so don't get your hopes up too much. However, if your confident in your geek skills, you can read more here
Tweaks like these always make me laugh, and wonder why Apple does silly things like this to us. Just state the conditions and let the users CHOOSE to have GameCenter or not. That's my thought at least.
Search HDR/GameCenter Enabler
in Cydia. You can find it on the ModMyi repo.