Hey folks it is not been long since we told you that Greenpois0n RC5 is live and it can do untethered Jailbreak for your iDevice and we promised to make up a tutorial. So below is the Tutorial on how to Jailbreak Untethered on iOS4.2.1. If you rely on an Unlock via ultrasn0w so dont use this and don’t Update your iDevice. And remember it will not Hacktivate your Phone so don’t restore to stock one.

.Things you will need:

Greenpois0n RC5

iOS4.2.1 (Don’t Update to Stock If you rely on AN UNLOCK)

iTunes Latest Version

Steps To Follow;

Step#1

Download Greenpois0n for MAC

Step#2:

Connect your Device and Open Greenpois0n

Step#3:

Press Jailbreak and follow the simple Steps to put your Device into DFU mode.

Step#4:

After the jailbreak is done, you will have a new application on your springboard called Loader. Use it to install Cydia, then it will ask you if you want to remove it. You can, or you can keep it for nostalgia. A quick re-spring, and you now have Cydia. You know what to do next.

The custom animated bootlogo is bulit in right now. To apply your own custom animated bootlogos you will need an additional Cydia application which is not available at the moment.