A tweet received from Joshua Hill which is a member of Chronic Dev Team is working on thier own tool of "Greenpois0n"that will support untethered Jailbreak for iPhone 4, iPod Touch 4 and iPad running iOS4.2.1. Right now you can untether your jailbreak using dev Team’s redsn0w 0.9.7b5 but it only serve to the users who have enrolled in the iPhone Developer program and have legitimate access to that IPSW.
p0sixninja: A lot of people are saying another tethered jailbreak is pointless, I agree. Focusing on getting untethered before release
In addition to this, Joshua has confirmed that they are working on their own untethered exploit and not the one used in redsn0w, and that it will not require SHHS blobs for iOS 4.2b3. The team thinks that it is pointless to roll out beta version of Jailbreaking tool.
tahu363: @p0sixninja I assume you are talking about Greenpois0n? Are you implementing Musclenerd’s untether or do you have your own?p0sixninja: @tahu363 we’re implementing our own
Capsfanchad: @p0sixninja I’m assuming “your own” will require 4.2b3 shsh? And thanks for your guys work!p0sixninja: @Capsfanchad lol no
We Know this this much that they start working on this but we are not sure that what will be the exact status of Greenpois0n iOS4.2.1 jailbreak .
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