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. 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 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.
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.