Finally, the 6.15 baseband downgrade has arrived! Now you can have your iPhone 3GS unlocked and still have a working GPS! The complete tutorial with download links(hosted on our servers) is in the members section of www.jailbreak4dummies.com

We also added fixes for the most common problems:

1. Baseband didn’t change after the first try.

2. Invalid SIM error.

3. No GPS after the downgrade.

4. No signal after the downgrade.

Email us with any questions at 247help /at/ jailbreak4dummies.com

Thank you for your support!