How To Jailbreak iOS 4.3.3 Untethered Redsn0w 0.9.6rc15

Step 1: Make sure your iPhone is running iOS 4.3.3 and  iTunes is up to date.

Step 2: Download RedSn0w 0.9.6rc15  Also download 4.3.3 firmware for your device.

Step 3: Run RedSn0w and browse for firmware 4.3.3 which you should have downloaded in the previous step.

Step 4: RedSn0w will ask you if your iPhone is a newer model. Read the explanation provided by RedSn0w and select Yes or No. Click Next to continue.

Step 5: RedSn0w will now prepare to jailbreak. When it’s complete you will have the option to install Cydia make sure you install it.
Click Next to continue.

Step 6: RedSn0w will ask you to make sure your device is both off and connected to your computer. Click next to continue.

Step 7: Follow the onscreen instructions to proceed and it should enter DFU mode

Step 8: If you have successfully entered DFU mode, RedSn0w will start the jailbreak process. You will see code running on your iPhone and it will reboot when finished. You should now have the Cydia icon on your springboard and your iPhone will be jailbroken Untethered.