How to Add a 3G BBD

3G BBD downgrades your iPhone operating system.

The 3G BaseBand Downgrade (3G BBD) is an iPhone program that lets you downgrade your device to a previous operating system (typically with lower specs). As of March 2011, it downgrades you to OS 2.28, but this changes with updates. This means that some older programs that have not been upgraded to the latest system will work. The flip side is that programs written since the newer systems will no longer work.

Instructions

1. Go to the iPhone App Store on your phone by clicking the blue "App Store" icon.

2. Search for "Big Boss" by clicking "Search" at the bottom of the screen.

3. Click the Big Boss Store link that appears.

4. Select "3G BaseBand Downgrade GUI." This is one of a half-dozen options that appear.

5. Click "Install."

6. Close the app store and select the program icon on your main screen when the download completes automatically. The icon has a blue picture of a lock and says "3GBBD" below it.

7. Click "GO."

8. Restart your iPhone when prompted.

References

• Woikr: 3GBBD
• BigBoss: 3G Baseband Downgrade GUI