Introduction This is a step-by-step guide to upgrade or install your 1st generation iphone firmware to the latest 3.0 firmware. This exercise will use jailbreak+unlock tool i.e redsn0w 0.7.2 released by iphone-dev recently. Please note that for most people, redsn0w 0.7.1 works OK. However, I got problem with 0.7.1 where I got stuck for hours at the jailbreak stage during [...]