If you are new to this it can well be intimidating with loads of jargon but take your time and go through the information below. But if you still want your baseband preserved but don’t rely on ultrasn0w then you are good to go.You also can bypass ultrasn0w and just pay out the original carrier to unlock the phone by using an online service like Previously users had to create their own custom IPSW files, but the latest redsnow avoids this.i Phone Dev Team released redsn0w 0.9.6 beta 5 recently with the functionality to update i Phone’s baseband with i Pad baseband, making it unlockable with ultrasn0w 1.2.
You may also want to connect your i Phone to your local Wi Fi network, so you don’t get charged for downloading the update over your cellular connection. i OS will automatically check for available updates and will inform you that i OS 7.1 software update is available. Wait for the download to complete and then tap Install to apply the update.Go back to Settings A note to Jailbreakers: If you’ve used evasi0n, OTA updates will be disabled, which is convenient if you plan to delay updating.If do want to upgrade, you’ll have to restore your device via i Tunes as described below. Since the release of Ultra Sn0w, our readers have been asking us for a guide to unlock i Phone 3G or i Phone 3GS.So here is our step-by-step guide to unlock i Phone 3G or i Phone 3GS using Ultra Sn0w so that you can use a SIM from any GSM carrier.