I0n1c

i0n1c, with real name Stefan Esser, is a german security researcher. He developed Antid0te, an for jailbroken iPhones in fall 2010, but never released it, because iOS since 4.3 includes. He developed code for iOS 4.3.1 that can untether the current jailbreaks. He gave his untether jailbreak to the iPhone Dev Team which updated redsn0w and PwnageTool to use it and released the new tools on 4 April 2011. Also sn0wbreeze got updated to include his untether. He updated his code later to support iOS 4.3.2 and 4.3.3, but it never got backported to 4.3.

Links

 * i0nic on Twitter
 * Homepage
 * GitHub