[Problem] No WI-FI, no Bluetooth, can't downgrade. Error 20

i have the frimware 1.1.4 and my iphone was working perfectly then i upgraded my frimware to 2.1 i have found these problems ..
1 - No Wi-Fi
2 - Bluetooth notavailable
3 - no ringing or vibrating in standby mode


plz help me to solve these annoying probs ..

i can't downgrade again to 1.1.4 (error 20) on iTunes

How exactly did you upgrade?

BTW, title changed from ":(help me plz"

and what about the wifi ... is it working ...

do you get the "repair needed " msg...