iH8sn0w is about to release the next update to iREB, This is the fourth version and has some new updates. The latest version Includes new and more clean interface.The SHSH files may help you to continue to downgrade your iPhone back to 3.1.2 when Apple releases a new firmware. The SHSH grabber is updated for the ipt2g (OTB users), ipt3, and the 3GS firmware 3.1.2, I hope all the 3GS user now familiar with the SHSH thingy, if not read the following explanation.
Why i need ECID SHSH Dump
Apple added ...