As this GreenPois0n is a Cross-platform iBoot payload toolkit, which helps Hackers discover vulnerabilities and design super fast, low level iBoot Jailbreaks and can Exploit payloads.
The Jailbreak works well on the iPhone 4 in conjuction with GreenPoin0s Toolkit! as pod2g, who aerlier discovered the first exploit to Jailbreak iOS 4.1 has confirmed that it is possible. As SHAtter, the name which is not confirmed yet is working thorughly to Jailbreak iPhone 4, iPod Touch 4g and it may release at anytime.
As the Will Strfach added - “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.”
Important Update: pod2g has now Confirmed that all Jailbreaks on iOS 4.1 need two exploits, 1. a tethered exploit and 2. an untethered exploit.