I forgot to tick the unlock check box while jailbreaking my iPhone 2G with redsn0w! I have to jailbreak it again and I must remember to tick the unlock check box this time.
If you really forgot to check the unlock option on redsn0w, you still can unlock it after your iPhone has been jailbroken. On your iPhone, setup Cydia installer and install BootNeuter, which is categorized in Utilities section. Once installation done, reboot your iPhone and follow below guide.
Please note that this guide is only applicable for iPhone 2G. If you wish to unlock your iPhone 3G/3GS, see this guide.
By proceeding to this guide, the author is not responsible to any damaged caused to your iPhone. Do it at your own risk!
After iPhone has been rebooted, you should see your the network reception on the signal bar. And your iPhone is unlocked successfully. Click here if you need any help on unlocking your iPhone 2G. Or, you can leave your reply below.