Iphone 3g 4.0.1 stuck on apple logo after doing a master reset pls help?

You can always download firmware from other sites and then restore. I did the mistake of doing the same thing you did and the only way to get out of it is to restore which means that your going to have to re jailbreak and unlock. You can download the firmware you want from here: a href="http://www.felixbruns.de/iPod/firmware/" rel="nofollow"http://www.felixbruns.de/iPod/firmware//a