These are instructions on how to enable Game Center and HDR photos on your iPhone 3G and HDR photos on your iPhone 3GS.

You will need to be jailbroken on the iOS 4.1 firmware to continue.

There is no Game Center application on the iPhone 3G! You have to copy it the Game Center App by yourself to get Game Center working. This just enables the function! Enables HDR images in the camera app for the iPhone 3G and the iPhone 3Gs and GameCenter for the iPhone 3G via WinterBoard. Please note: This package has 3 things to enable. HDR, GameCenter and both. Don’t use HDR and the GameCenter enabler, because it won’t work. Use the 3rd enabler (HDR/GameCenter enabler) for both.

Step One
Press to launch
Cydia from your Springboard.

Step Two
Press the
Sections tab at the bottom of the screen.

Step Three
Press to select
Tweaks from the list of Sections.

Step Four
Press to choose
HDR/GameCenter Enabler from the list of Packages.

Step Five
Press the
Install button at the top right of the screen.

Step Six
Press the
Confirm button to begin installation.

Step Seven
Once installation has completed successfully click the large
Reboot Device button.