Update iPhone 3G, 3GS Baseband To 06.15.00 For Windows, Mac using Redsn0w 0.9.6b5

Windows users can now update their iPhone 3GS & 3G baseband to 06.15.00 after Redsn0w 0.9.6b5 is officially released today by the iPhone Dev Team, and this release can also be used by Mac OS users, albeit they have their exclusive tool, namely PwnageTool 4.1.3 for the same purpose.

Therefore use this link to download Redsn0w 0.9.6b5 and update your baseband (05.14.xx or 05.15.xx) to 06.15.00 to iOS 4.2.1 unlock purpose using Ultrasn0w 2.1. And the tutorial to do so can be found in the following page:

Update iPhone 3G, 3GS Baseband To 06.15.00 For Windows & Mac using Redsn0w 0.9.6b5

Requirements to update iPhone 3GS & 3G baseband to 06.15.00 with Redsn0w 0.9.6b5:

• Download Redsn0w 0.9.6b5 for Mac OS X and Windows
• Download iOS 4.2.1
• Download iTunes 10.1.

After you have completed the steps to update your existing baseband on that page, then continue your steps to unlock iOS 4.2.1 on iPhone 3GS, 3G with Ultrasn0w 2.1 so you can use any carrier.