MuscleNerd, the infamous iPhone hacker and member of iPhone Dev-Team just confirmed that GreenPois0n tool which will be based on SHAtter exploit will jailbreak and hactivate iOS 4.1 on iPhone 4, iPod Touch 4G and iOS 3.2.2 on iPad (3G+Wifi) only. iPhone 3G, iPhone 3GS and iPod Touch 3G will not be supported by GreenPois0n.
The reason behind this is that SHAtter, the low-level bootrom exploit only lies in the Apple A4 chip which can be found in iPhone 4, iPod Touch 4G and iPad. All other iPhone models use Samsung chips which are vulnerable to 24kpwn exploit found by pod2g.
Yesterday, p0sixninja confirmed that they will release GreenPois0n on the upcoming Sunday and few days back, he also confirmed that GreenPois0n will do a hactivated iOS 4.1 jailbreak on iPhone 4, iPod Touch 4G and iPad.
According to MuscleNerd, @Comex soon will release another userland jailbreak like JailbreakMe which will jailbreak iOS 4.1 on iPhone 3G, 3GS and iPod Touch 2G, 3G. Stay tuned while we provide you with more GreenPois0n updates.
Update1: GreenPois0n Tool Released [Download for Windows & Mac]
Update2: How to Jailbreak iOS 4.1 on iPhone 4 & iPhone 3GS with GreenPois0n Tool?
Update3: How to Jailbreak iPod Touch 4G/3G iOS 4.1 & iPad iOS 3.2.2 with GreenPois0n?