The iPhone hacker p0sixninja, behind GreenPois0n jailbreak tool has just posted on his Twitter account that he will update GreenPois0n tool to support the newly released iOS 4.2.1 on all iOS devices.
@Chpwn redsnow will be open source soon :)Also p0sixninja of Chornic Dev Team confirmed that GreenPois0n will go open sourced:
p0sixninja: Greenpois0n components will be updated/open sourced as soon as it’s out of beta.In case you don't know, GreenPois0n was released early this month based on Limera1n's exploit. You can follow our guide posted here to jailbreak iPhone 4, 3GS, iPad and iPod touch using GreenPois0n.
"Sunday is a Funday" is dev team’s slogan, I believe ours is "Patience Please!"They just wants you to be patient, so be patient and don't ask again for release time, probably it will be released next week so stay tuned !!
It’s /not/ coming out tomorrow, I’m just getting sick of hearing dev teams slogan (as much as everyone else is sick of hearing ours =P)
And no that doesn’t mean it’s coming today either. Patience Please!!
the release date be count by days or week ?@pod2g replied:
I would say days.Another thing you have missed which confirms it's really soon. Chronic dev team member p0sixninja, the hacker behind GreenPois0n payload has just posted back SHAtter exploit on the iPhone wiki and saying The SHAtter Story Begins..
@MuscleNerd so redsn0w supports iPod touch 2g mc? Or is it a typo on the blog?MuscleNerd replies:
@jonnyboywashere it does, but that ipt2g MC model will be a tethered JB at 4.1 until @comex releases a new userland exploitThis userland jailbreak from comex we already talked about when MuscleNerd confirmed that iOS 4.1 jailbreak coming from Comex. Then the talks changed when pod2g and p0sixninja came to the jailbreak scene, first, we published information about SHAtter exploit and USB based Greenpois0n jailbreak for iOS 4.1. But today, we can't decide who will jailbreak iOS 4.1 and we can't decide it's tethered or untethered. As usual we will keep you informed by any updates.
Hey, @p0sixninja 's epic greenpois0n works well on iPhone 4G ! (need to work on the framebuffer code tho ! )

remember when we said greenpois0n would come to use later as a toolkit? using it to create this jailbreak is cutting our workload in half (or maybe more). that's why pod mentioned it.It's not confirmed that the next jailbreak will be named GreenPois0n but at least the same code will be used to build the tool. Hackers are currently working hard to make the releases sooner than later, as usual, we will keep you informed by any updates about the tool.

yea but you gotta plug her everytime you wanna do itAccording to the well-known iPhone hacker Vincet, they are working on doing making the jailbreak untethered but they will not success. Of course, we will keep you informed about any updates. [via Twitter]
- We have not yet announced if this is tethered or untetheredUpdate 2: It seems like SHAtter confirmed to be tethered jailbreak, check my new post here for more information.
- We have not yet announced details about the exploit
- Anything you read saying it is one of the above in definite terms is just speculation, again, we have not given official word about the tether status or any details regarding the exploit used.