How to Upgrade Your iPhone 4, 3GS Without Updating the Baseband (Windows)

These are instructions on how to upgrade your iPhone 4 or iPhone 3GS firmware without updating the baseband.

Step One

Create a folder on your desktop called Pwnage

Download the latest version of RedSn0w from here and place it in the Pwnage folder. Likewise, download the firmware you would like to upgrade to from here and place it in the Pwnage folder.

Extract the RedSn0w zip file to the Pwnage folder.

Step Two

Right click or control click the RedSn0w application that you extracted in Step One and click Run as Administrator from the popup menu that appears.

Step Three

Click Extras from the RedSn0w menu.

Step Four

Click Even More from the Extras menu.

Step Five

Click the Restore button from the Even More menu.

Step Six

Click the IPSW button.

Choose the firmware you would like to update to from the dialog box that appears and click the Open button.

Step Seven

You will be asked if you would like to Prevent baseband update. Click the Yes button.

Step Eight

You will be told that Pwned DFU mode is required. Click the OK button.

Step Nine

Connect your iPhone to the computer, turn it off, and click Next

Step Ten

RedSn0w will now guide you through the steps to get into DFU mode.

Hold down both the Home button and the Power button for 10 seconds.

Release the Power button and continue holding the Home button until RedSn0w detects the device.

Step Eleven

Your device will be detected once in DFU mode and exploited with Limera1n. 

Redsn0w will then prepare a restore image.

Step Twelve

Redsn0w will now restore the device to the new firmware.

Step Thirteen

RedSn0w will tell you when the restore has been completed successfully.

How to Upgrade Your iPhone 4, 3GS Without Updating the Baseband (Mac)

These are instructions on how to upgrade your iPhone 4 or iPhone 3GS firmware without updating the baseband.

Step One

Create a folder on your desktop called Pwnage

Download the latest version of RedSn0w from here and place it in the Pwnage folder. Likewise, download the firmware you would like to upgrade to from here and place it in the Pwnage folder.

Extract the RedSn0w zip file by double clicking it.

Step Two

Right click or control click the RedSn0w application that you extracted in Step One and click Open from the popup menu that appears.

Step Three

Click Extras from the RedSn0w menu.

Step Four

Click Even More from the Extras menu.

Step Five

Click the Restore button from the Even More menu.

Step Six

Click the IPSW button.

Choose the firmware you would like to update to from the dialog box that appears and click the Open button.

Step Seven

You will be asked if you would like to Prevent baseband update. Click the Yes button.

Step Eight

You will be told that Pwned DFU mode is required. Click the OK button.

Step Nine

Connect your iPhone to the computer, turn it off, and click Next

Step Ten

RedSn0w will now guide you through the steps to get into DFU mode

Hold down both the Home button and the Power button for 10 seconds.

Release the Power button and continue holding the Home button until RedSn0w detects the device.

Step Eleven

Your device will be detected once in DFU mode and exploited with Limera1n. 

Redsn0w will then prepare a restore image.

Step Twelve

Redsn0w will now restore the device to the new firmware.

Step Thirteen

RedSn0w will tell you when the restore has been completed successfully.

How to Upgrade Your iPhone to iOS 5.1 Without Updating Your Baseband (Win)

These are instructions on how to upgrade your iPhone 4 GSM or iPhone 3GS to iOS 5.1 without updating your baseband using Windows. This will maintain the potential to unlock if you are on a supported baseband.

Step One
Download the latest version of RedSn0w from here and place it in a Pwnage folder on your Desktop.


Step Two
Download the iOS 5.1 firmware for your device from here (4) and here (3GS)and place it in the same Pwnage folder.

Step Three
Extract the RedSn0w archive then right click the RedSn0w executable (from within the extracted folder) and select Run as Administrator to launch the application.




Step Four
Click Extras from the RedSn0w main menu.


Step Five
Click Custom IPSW from the Extras menu.


Step Six
Select your iOS 5.1 firmware from the Pwnage folder on your Desktop and click Open.


Step Seven
RedSn0w will now customize an IPSW file for you.


Step Eight
RedSn0w will inform you once your IPSW has been created successfully. Click the OK button.


Step Nine
Click Pwned DFU from the Extras menu.


Step Ten
Connect your device to the computer via USB and power it off. Then click the Next button to continue.


Step Eleven
Hold down the Power button for 3 seconds.


Step Twelve
Without releasing the Power button, also hold down the Home button for 10 seconds.


Step Thirteen
Without releasing the Home button, release the Power button BUT KEEP holding the Home button until your device is detect in DFU mode.


Step Fourteen
You device will now be exploited with LimeRa1n.


Step Fifteen
Once its done you will be in Pwned DFU mode.


Step Sixteen
Launch iTunes by clicking its icon in the dock.


Step Seventeen
Select your device from the list on the left, then hold down the Shift key and click Restore.


Step Eighteen
Select the NO_BB custom IPSW from the Pwnage folder on your desktop and click Open.


Step Nineteen
You iPhone will now be upgraded to iOS 5.1 without updating the baseband.