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