Hello guys, I have couple of questions... I got used IPhone 4 (iOS 4.2.1) and I want to jailbreakn it and unlock it (probably via ultrasn0w)... So is there any way to update IPhone to iOS 6, 6.1 or 6.1.2 but now the latest 6.1.3 because i will loose possibillity for untether Jailbreak or Jailbreak at all... So my question is can i update iPhone 4 from 4.2.1 to 6.1.2 and preserve baseband if possible (for ultrasn0w unlock) Sorry if I missed thread or section because I am new on this forum. Thank you.