November 23, 2010 
SoSly 
Posixninja one of the developers of Greenpois0n has tweeted that an update to the popular jailbreaking tool will be coming within a few days. The update will bring iOS 4.2.1 jailbreak compatibility but there is a bit of bad news.
The tweet states the jailbreak will be tethered/semitethered. It’s kind of like what the Dev Team stated, if you have your iOS 4.1 shsh’s saved then you should have an untethered jailbreak but if you don’t you will have a tethered jailbreak.
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