iPhone OS 4.0 Jailbreak is Released
One week from the day Apple announced OS 4.0, the iPhone Dev Team releases a jailbreak. This jailbreak is for developers to get ahead start on updating their apps for 4.0.
Details from: redsn0w 0.9.5 BETA [iPhone Dev Team]
YOU SHOULD STAY CLEAR OF THIS BETA SOFTWARE IF YOU RELY ON A CARRIER UNLOCK!
iPhone OS 4 Jailbreak
Multitasking on your 3G
Once you are jailbroken, navigate to /System/Library/CoreService/SpringBoard.app/N82AP.plist
Open the plist and change the multitasking key to = True
if the multitasking key is not there, add it