How to Downgrade Your 1.1.3 iPhone (Windows)

These are instructions on how to downgrade an iPhone that was accidentally upgraded to 1.1.3 Firmware. If your iPhone has the 3.9 Bootloader then it is possible to downgrade the firmware, then downgrade the baseband and get a working phone again.

If you have the 4.6 Bootloader then you must follow the downgrade firmware part of this tutorial and then perform the 1.1.2, 1.1.3 OTB unlock:
How to Unlock Your 1.1.2 - 1.1.3 OTB iPhone

If you are on a Mac you can find these same instructions for Mac here:
How to Downgrade Your 1.1.3 iPhone Using Mac


DOWNGRADE TO 1.1.1
For this you will need iBrickr 0.91, iTunes 7.5, and iPhone Firmware 1.1.1

- Get iTunes 7.5 from: here
- Download iBrickr 0.91 from: here or here
- Download iPhone Firmware 1.1.1 from: here

Step One
Connect your iPhone to your PC and launch iTunes


Step Two
Press and hold Home and Power button of your iPhone at the same time. Once the screen turns black, release the power button but keep on holding the Home button until Apple logo changes to the restore screen. Note: The screen may also just stay black. This is normal. Just hold the home button till iTunes detects the iPhone.


Step Three
iTunes will then detect an iPhone in restore mode.


Hold down the Shift key and click Restore.


A dialog window will appear asking you to select the firmware to restore to. Select the 1.1.1 firmware we downloaded earlier (iPhone1,1_1.1.1_3A109a_Restore.ipsw)


At the end of the restore you will get Error 1015. This is okay. Simply click the Ok button.


Another popup will appear telling you your iPhone is in recovery mode. Click the Ok button.


Step Four
Exit iTunes by selecting Exit from the File menu. Press Control+Alt+Delete on the keyboard. Select to Start Task Manager.


Click to select the Processes tab from the Windows Task Manager window.


Select iTunesHelper.exe from the list of processes and then click the End Process button. A popup will appear asking you to confirm the end process. Click the End Process button from the popup.


You can now close Windows Task Manager by click the X at the top right of the window.

Step Five
You will notice your iPhone is still in recovery mode. To exit recovery mode launch iBrickr.exe which you downloaded earlier.


Click the Boot the phone link.


iBrickr will say Please wait while iBrickr tries to fix your phone.


The iPhone will reboot and display the Activate screen again!


You can now close iBrickr.


JAILBREAK 1.1.1
Step One
At the "Activate iPhone" screen move the slider to the right for emergency calling.


Step Two
Dial "*#307#" then press the Call button.


Step Three
You will hear the phone call itself. Use the back arrow to clear the number you just enter. Now dial "0" then press the Call button.


Step Four
Now you will be able to see the incoming call. Press the Accept button.


Step Five
Now press the Hold button to put the call on hold.


Step Six
The phone will call itself again. This time press the Decline button.


Step Seven
We now are shown the keypad again. Click the contacts tab at the bottom. We are now presented with an empty contacts menu. Click the plus(+) button to add a new contact.


Step Eight
Press Add New URL.


Step Nine
Input prefs: as the url then press the Save button.


Step Ten
Press Add New URL again.


Step Eleven
Input http://jailbreakme.com as the url then press the Save button.




Step Twelve
Now in the contact view you will see the 2 urls. Press the prefs: url.


Step Thirteen
This will bring up the iPhone's Settings Menu. Select your wireless network from the Wi-Fi category. Press the Settings button at the top left to go back to the Settings Menu.


Step Fourteen
Select the General category from the Settings Menu. Then select the Auto-Lock subcategory.




Press to select Never from the list of Auto-Lock times.


Press the Settings button at the top left to return to the settings window.

Step Fifteen
Press the Home button. At the "Activate iPhone" screen move the slider to the right for emergency calling.


Step Sixteen
Now dial "0" then press the Call button.


Step Seventeen
Now you will be able to see the incoming call. Press the Accept button.


Step Eighteen
Now press the Hold button to put the call on hold.


Step Nineteen
The phone will call itself again. This time press the Decline button.


Step Twenty
We now are presented with our contacts menu. Press to select the contact we added.


Step Twenty One
Press the http://jailbreakme.com url. This will open Safari and take you to jailbreakme.com


Step Twenty Two
Scroll down to the bottom of the page and press Install AppSnapp.




Phone will return to activation screen, but don't panic, just wait. iPhone should automaticly restart after almost a minute. When the phone starts again, it should no longer say Slide to emergency, but rather Slide to Unlock. This means it was successfull!


I've had a few reports of the emergency slider not changing to the unlock slider. The best suggestion so far has been to keep the iPhone connected to the computer and make sure its detected in iTunes. Otherwise it seems to work if you retry installing AppSnapp till it works. Don't know what the issue is exactly (maybe a server load issue) but if it doesn't work immediately then try again.

DOWNGRADE THE BASEBAND
At this point if you have a 4.6 Bootloader iPhone you cannot continue any further. You can stay at 1.1.1 or you can install OktoPrep and update to 1.1.2 then 1.1.3.
How to Activate and Jailbreak Your OTB 1.1.2 iPhone Using Windows

Once in 1.1.2 or 1.1.3 with a 4.6 BL you can peform the Geohot Unlock:
How to Unlock Your 1.1.2 - 1.1.3 OTB iPhone

If you have the 3.9 Bootloader then you can continue to downgrade your baseband and get full phone functionality.

Step One
Press to select Settings on your Springboard.


Step Two
Press to select General from the Settings Menu.


Step Three
Press to select Auto-Lock from the General Menu.


Step Four
Press to select Never from the list of Auto-Lock times!


Step Five
Press the Home button to return to your Springboard. Now press the Installer icon to launch Installer app.


Step Six
Press the Sources tab at the bottom of the screen.


Step Seven
Press the Edit button at the top right of the screen.


Step Eight
Press the Add button at the top left of the screen.


Step Nine
Enter http://i.unlock.no as your new source and press the large OK button.


Step Ten
Press the Done button at the top right of the screen.


Step Eleven
Press the Install tab at the bottom of the screen.


Step Twelve
Press to select Unlocking Tools from the Category list.


Step Thirteen
Press to select Baseband Downgrader from the list of Packages.


Step Fourteen
Press the Install button at the top right of the screen.


Step Fifteen
Press the large Install button that appears at the bottom of the screen.


Step Sixteen
A Notice will appear asking you to make sure that Auto-Lock is set to Never. Since we already did this we can press the large OK button.


Step Seventeen
Once completed you will receive Notice that your Baseband is now downgraded! Press the large OK button.




At this point if you can stay at 1.1.1 or you can install OktoPrep and update to 1.1.2 then update 1.1.3.
Jailbreak 1.1.2: How to Activate and Jailbreak Your OTB 1.1.2 iPhone Using Windows

Update to 1.1.3: How to Officially Update and Jailbreak to 1.1.3 iPhone Firmware

THANKS***: Thanks to i.unlock.no for adding the baseband downgrade to their repository. Also thanks to hacktheiphone for a couple of the screenshots.