There is no untethered jailbreak for iOS 5 till now .The famous iPhone hacker MuscleNerd, the brain of Dev-team which is behind Redsn0w jailbreak tool has warned us from a jailbreak tool called Fastra1n. The scammer who behind this tool is trying to let us buy his tool which supposed to jailbreak iOS 5 untethered, but this will never happen by such a fake tool .
We know that all people are waiting for iOS 5 untethered jailbreak but you must be careful MuscleNerd, in a tweet answering someone about FastRa1n, said that FastRa1n jailbreak tool is totally fake and it has nothing to do with iOS 5. The provider charges you $24.99 to give the tool.
@MuscleNerd: We’re in part of JB cycle where scammers entice you with iOS 5 “untethered JBs ” for $$. Please ignore them. We’ll tell you if any are true.
So be patient and stay away from this fake tool.