Musclenerd just confirmed that redsn0w 0.9.5, which they developed to jailbreak OS 4.0 beta 1 to beta 4 is totally compatible with iOS GM 4 for iPhone 3G. The beta release is still full of bugs and not intended for the end user. The beta version was meant for iPhone Jailbreak Apps programmers to test their applications to correct under OS 4. If you are going to jailbreak your iPhone 3G with Redsn0w make sure to read the note / warning section carefully before attempting a install of iOS 4 …