Let me start from the begining.
NB: Start with your Iphone diconnected from your comuter.
1) Hold down the power and home button for 10 seconds, the screen should seem to power off.
2)Keep on holding it until a apple logo appears on the screen and the screen goes blank, again.
3)Release both buttons
4)Start holding the home button and plug it into your computer, keep holding.
5)The activation thing should appear on the screen.
6)Itunes would still not be able to recognize it, or it will again give you the server error.
7)In ziphoneGUI use "Clear BL 2.9 Baseband" or in batch mode, use @ziphone -e
8)Text scrolls, and it should be working again.
9)Feel free to try to upgrade again.
