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Step 5. Once your iPhone is back ON you will see a BlackRa1n named icon on your iPhone SpringBoard. Which means your iPhone or iPod has successfully been jailbroken. Tap on the BlackRa1n icon on SpringBoard. (Make sure your iPhone/iPod have internet connection)
Step 6. Now choose your desired installer from the given choices and press the Install button at top-right. Choose Sn0w only if your want to Unlock.
BlackRa1n will download your selected package and then install it.