Once the custom IPSW has been built, Pwnage Tool will ask you to connect your i Device to your computer.
Once your device is detected, you’ll be instructed to put your i Device into DFU mode.
For those who are wondering if you can update your 3G or 3GS to 06.15 solely for the purposes of downgrading to , the answer is “yes” for 3G owners, and “maybe” for 3GS owners.
The i Pad baseband is not compatible with 3GS units manufactured week 34 of 2011 or later.
This is a complete tutorial to unlock your i Phone 3G baseband with Ultrasn0w in order to use any Sim card on your mobile.The previous version covered only the most prevalent NOR chip.i Phone 3GS and i Phone 3G users can follow these simple steps to downgrade from baseband: Dev team have again reiterated that i Phone 3GS units manufactured in early 2011 or later have a NOR chip that’s incompatible with and so trying to install the i Pad baseband will brick the device.The DFU feature will be extremely useful for users who can’t put their i OS device in DFU mode due to a faulty or non-responsive Home or Power button.Baseband Downgrade: This version of Redsn0w covers 3 different types of NOR chips in the i Phone 3G and i Phone 3GS (the earlier version covered only the most prevalent NOR chip), so i Phone 3GS users who had problems downgrading the baseband using Redsn0w 0.9.14b1 should try this version of Redsn0w as it should fix their issue.In this guide you’re going to learn how to update i Phone 3GS / 3G baseband to to unlock i Phone later. Now hit the Browse for IPSW button and select i OS 4.2.1/4.1 firmware for your device (downloaded from Step 1).Open the downloaded Pwnage and copy the Pwnage to your desktop/any folder and execute it from there. Now select Expert Mode from the top left side of the window. On next screen, Select General and hit the Next arrow button.Ultra Sn0w 1.2 is out now to unlock i OS 4.2.1 and 4.1 on i Phone 3GS and i Phone 3G.Unfortunately, unlocking is pretty complicated this time.* Press and hold the power home buttons for 10 seconds.* Release the power button but continue holding the home button for 10 seconds.