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Downgrade 1.1.3 to 1.1.1 completely

20 January 2008 No Comment

Downgrade 1.1.3 to 1.1.1 completely

This guide will teach you how to downgrade your 1.1.3 firmware for the iPhone back to 1.1.1 using itunes 7.6. Now keep in mind, IT IS NOT POSSIBLE to downgrade the firmware if your phone came with either 1.1.2 or 1.1.3 out of the box. The reason for this is because it has a completely different bootloader. So if you accidentally upgraded your firmware and want to downgrade back to 1.1.1, please read on.

Downgrade Firmware

First we need to downgrade the firmware back to 1.1.1.

Put iPhone in recovery mode using iTunes 7.6

– charge your iPhone
– disconnect iPhone from computer (remove usb cable)
– turn off iPhone completely (wait until iPhone screen turns black)

– start iTunes 7.6
– push and hold the home button on iPhone
– while holding the home button connect the usb cable to iPhone
– (iPhone will start up doing this = Apple logo)
– continue holding the home button
– after a while you’ll see the Connect To iTunes image on the iPhone:

– release the home button

– iTunes will popup this window:

– press Check, wait a little…

– NOW iPhone is in recovery mode:

– press OK

– now you can use shift/option and restore whatever firmware you want using iTunes

Jailbreak and Install Installer.app

1. Now that we see the activation screen on your iPhone, slide for emergency and dial *#301# to make the phone call itself. If the call window quickly disappears, just remove the *#301# and dial 0.

2. Answer the call and place the call on Hold. The phone will then try to call itself again but press Decline.

3. Tap Contacts, then tab the + button to add a new contact. Scroll to the bottom and tap Add new URL. The first one we are going to add is prefs: and the second one you need to add is jailbreakme.com

4. The reason why we created prefs: was to allow you to connect to a wireless network first. So basically now you need to start over, Slide for Emergency and dial 0. Answer the call then place it on Hold. On the new call tap Decline. This will take you to you contacts. Tap the newly created contact (No Name) and click on first one, prefs:. Connect to a wireless network and then go to General > Auto-Lock > Never. Repeat these steps again but this time click on the second URL, jailbreakme.com.

5. This will launch the jailbreakme.com webpage. Tap Install AppTapp. The phone may reboot itself a few times but give it a few minutes. Once this process is finished, you will see the newly created Installer.app on your main screen.

Downgrade baseband firmware

Now that the firmware has been restored, we also need to downgrade the baseband firmware.

1. Launch the Installer.app and tap System, then install the BSD SubSystem.

2. Click on Sources in Installer.app and add: http://i.unlock.no/

3. Now install the Baseband Downgrader which is found under the Unlocking Tools category. This will take about 5 minutes. (It supports the new baseband)

4. Once this process is completed, you must restore the 1.1.1 firmware again.

5. Load up iTunes real quick and while holding Shift for windows users or Option for Mac users click the Restore button once again. Navigate to the 1.1.1 firmware that you downloaded earlier and let iTunes do it’s thing. Once restored, you can let iTunes reactivate your iPhone and reinstall the Installer.app program by opening up Safari and navigating to: jailbreakme.com.

6. Then, if you want to go to 1.1.2 use the usual instructions to jailbreak and unlock.

Thanks to modmyifone.com for instructions

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