Restore iphone without updating baseband
Likewise, download the 5.0.1 firmware from here and place it in the Pwnage folder.
Step Twelve You'll then be notified that your i Phone is in Pwned DFU mode.This step by step guide/tutorial will show you how to update your i Phone 4 to i OS 4.1 while preserving the baseband.Because we will not update the baseband, you will still be able to run the latest i OS version available, you will be able to jailbreak using Lime Ra1n, and you will be able to unlock your i Phone using Ultra Sn0w. It is pretty simple but it does require you to read the steps carefully. If you are on Mac, hit the Alt/Option key while clicking Restore.If you are using the i Phone 3GS you may be asked to identify whether you are on a newer or older model.Step Six Red Sn0w will now begin building a custom IPSW for you.