a good way to install ios 3.1.3

[stagbar]

maybe we can install the WhitD00r ios,that's a ios 3.1.3 CFW(custom)
WhiteD00r (whited00r.cf) was a Custom Firmware (CFW) for old iOS devices that emulated newer versions of Apple's mobile OS
This CFW is based on iOS 3.1.3 and it is compatible with the iPhone 2G, iPhone 3G, iPod Touch 1G and iPod Touch 2G.and includes Hacktivation out-of-the-box
(Hacktivation is a way to using an iPhone without an authorized carrier, or when bypassing iCloud Lock.)

WhiteD00r is a CFW, so I guess we won't need shsh

I pretend we can bypass shsh

the CFW also includes img3 file,so maybe it can't run on 1g,Maybe 2g can do it

[zoe-vb]

At this time, that is not possible. Apple introduced large changes between iOS 2 and 3 to the NOR structure and various OS elements. As such, it is at present undocumented. This has been attempted before.