So i was trying to Jailbreak my friends brother's phone. after it says downloading jailbrak data on the iphone it goes into the terminal thing. but instead of going like in this video http://www.youtube.com/watch?v=G-3ZOY1i4Vo i get something different. instead of the screen saying those small letters and scrolling down slowly the screen scrolls down fast and i think it says something about an error 172 or something. redsn0w says jailbreak sucessful and i have to reboot into teathered mode. but when i go to the springboard after teather booting i see no Cydia icon whatsoever. help? (Using PC Running Windows 7, •redsn0w 0.9.15b3, yes i selected the ipsw file, iPhone 4 non-S, iOS 6 Final. Reason for Edit: Spelling Mistakes.