I just restored the phone using an AT&T simcard and the automatic setting was there all the time, after redsn0wing>ultrasn0wing the phone I inserted my carrier simcard and the setting is gone.

Is there anything I can edit to get the automatic date & time again?

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3G:$300>redsn0w 0.72>ultrasn0w>Unlocked 3.0>pwnage 3.14>Unlocked 3.1.2
2G:$399>hardware unlock>elite-team virginizer>upgrade to 1.1.1>toc2rta jailbreak>anysim 1.1>unlocked 1.1.1>Restored to 1.1.3>Ziphone 2.2>Unlocked 1.1.3>Modified Ziphone>iClarified unlock patch>Unlocked 1.1.4>QuickPWN>2.0.2>2.1>2.2>2.2.1>redsn0w 0.71>Unlocked 3.0
Hackintosh: AMD X2 Nvidia 8400GS Dual 22" LCD Screen