The iPhone Dev Team has just released an update to redsn0w jailbreak tool. Apart from being released with cosmetic changes and support for Windows, redsn0w 0.9.9b6 will also fix the location services GPS issues faced by 06.15.00 baseband iPhone 3GS with iOS 5 firmware jailbreak.
We determined that it was possible to jailbreak iOS 5 firmware merely hours after Apple officially released their most extensive update ever for iPhone, iPad and iPod touch. At that time, the iPhone Dev Team released redsn0w 0.9.9b5 which did not come with support for Windows. However redsn0w 0.9.9b6 which was released earlier today brings support for Windows as well as a very crucial fix for 06.15.00 baseband iOS 5 jailbroken iPhone 3GS owners.
Bear in mind that if you do not have an iPhone 3GS to worry about, this update isn't for you. The fix is only for iPhone 3GS jailbroken on iOS 5 with 06.15.00 baseband. Using redsn0w 0.9.9b6 you will be able to fix location services issue on the aforementioned kind of iPhone 3GS. This issue has been causing the network to crash when location services being used. Redsn0w 0.9.9b6 will fix iPhone 3GS location services issue by eliminating those network crashes.
A couple of days back when we told you how to unlock iOS 5 firmware, we also told you about a little procedure that the iPhone Dev Team said was needed to be done before unlocking iPhone 3GS. You were to disable location services while the initial setup procedure was taking place, location services could be switched on afterwards once the procedure was done. However now with the release of redsn0w 0.9.9b6, there is no need to disable location services during initial setup.
If you already did an iOS 5 firmware jailbreak on 06.15.00 baseband iPhone 3GS, simply connect your device to the computer, download and run redsn0w 0.9.9b6. There's no need to do the whole jailbreak once again, simply re-run this new redsn0w over your existing jailbreak. Just remember to uncheck Install Cydia. If you have an old-bootrom iPhone 3GS, first select the iOS 5 firmware IPSW for iPhone 3GS before proceeding as redsn0w can not auto-detect firmware version of old-bootrom iPhone 3GS.
If you don't know how to jailbreak iOS 5 firmware on iPhone 3GS using redsn0w, follow this guide. If you're on baseband 06.15.00 you'd definitely need an unlock. Here's how to preserve iPhone baseband before iOS 5 firmware unlock using ultrasn0w.