Last Saturday, geohot realeased his beta version of Limera1n, which allows users to jailbreak most idevices in firmware 4.1.
However, alot of users experienced problems. It is adviced to avoid that jailbreak as it is not stable. It’s currently in beta 4.
However,links to those who need it:
Next up, is the long awaited greepois0n from chronic team. This time, it does not uses the SHAtter exploit, as they do not want to waste 2 exploits at the same time. It just makes it easier for apple to patch it. Instead, it uses the exploit by limera1n.
Guide for jailbreaking greenpois0n will be posted soon.