Redsn0w 0.9.6RC15 Crashes while Downloading iPad 6.15.00 Baseband for iPhone 3GS

Hello Arnel, first, I would recommend you to download the latest version of Redsn0w for iOS 4.3.3 as this version is more stable and less buggy in comparison to the one that you were using. You can get Redsn0w 0.9.6RC19 from here if you are on Mac OS X or using this link if you are using a Windows. Now that you have the latest version of iTunes, you can now start jailbreaking your iPhone using this new jailbreak tool. Just to make sure, you can follow our step by step guide posted here on how to jailbreak and update iPhone 3GS 5.16.01 / 5.16.02 baseband to iPad’s 6.15.00.

There are possibility that Redsn0w get crashed primarily because it can’t distinguish or access your iPhone 3GS. We all know that iPhone 3GS is available in old and new bootrom, and in order to jailbreak your iPhone successfully, Redsn0w will prompt for the bootrom of your beloved device. If you are unsure about the bootrom of your iPhone, then you can use iH8sn0w’s iDetector to help you analyze the bootrom of your iPhone 3GS. Now, during the jailbreaking process, (if you were following our tutorial) in step 6 Redsn0w will prompt you for the bootrom of your device, just simply choose YES and if your bootrom is new or NO if your baseband is old.

Additionally, you should be note that you should not choose Install Cydia and Install iPad baseband at the same time during the jailbreak process. To eliminate unnecessary error and crashes, you should choose Cydia first in Step 9 and then complete the iOS jailbreaking process. Then, you should re-launch Redsn0w and this time you should choose and Install iPad baseband. Then after jailbreaking, you can now unlock your iPhone using Ultrasn0w 1.2.3. You can refer on this tutorial on how to unlock an iPhone using Ultrasn0w.