How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]

How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]

Posted by · 321156 views · Translate
FrenchArabicSpanishBulgarian

These are instructions on how to enable a firmware downgrade on your iPhone using a Cydia stored SHSH and Windows.

In order for these instructions to work you must have previously jailbroken on an earlier firmware version and opened Cydia allowing it to save your SHSH on file. You can learn more about this situation here

Step One
Right click Notepad from within Start:Programs:Accessories.
How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]

Step Two
Choose Run as administrator from the contextual popup menu.
How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]

Step Three
A popup will appear asking if you would like to give Notepad system access. Click the Yes button.

Step Four
Once Notepad opens select Open... from the File menu.
How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]

Step Five
Choose to view all files from the dropdown then navigate to C:WindowsSystem32driversetc and select the hosts file. Click the Open button.
How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]

Step Six
Append 74.208.10.249 gs.apple.com to end of the file.
How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]

How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]

Step Seven
Select Save from the File menu to commit your changes.
How to Downgrade Your iPhone 3GS Using a Cydia Saved SHSH [Windows]


You are now ready to downgrade your device. Simply put the iPhone into DFU mode and in iTunes Shift+Click the Restore button to select the firmware you would like to downgrade to. If you get error message 1011 or 1013 just ignore it. If you get error message 1015 repeat the entire restore then jailbreak after it fails the second time.

*Thanks goes out to Saurik for making these downgrades possible.

prasad - August 25, 2011 at 6:09am
error 3194 iphone4 custom ipsw chang host my os is windos halp
Walle - September 25, 2010 at 2:28am
I got stuck in DFU mode (displays connect to iTunes or screen is black) after downgrading from 4.1 to 3.1.2 and got error message 1015. It was a little bit unclear in this article, but you can run your jailbreak tool (e.g. RedSn0w) even if you\'re stuck in DFU mode.
Petya - September 14, 2010 at 11:01pm
Hi does anyone get an error(13)? I had an 3.0.1 running and then downgraded..or rather upgraded 3.1.3 - and that worked but when i tried to install 4.0 or 4.0.1 it\'s says erro(13)? Thanks in advance!
Cooler - August 20, 2010 at 8:56pm
What verison of itune am I surpport to have for this to work because i did as you say and it still gives me the same error plz helppppp
orange - July 15, 2010 at 9:51am
Tried to downgrade my 3GS on 3.1.3 with Spirit JB to 3.1.2 using my Cydia SHSH blobs to be able to re-jb in order to be able to jb on iOS4, but the restore fails for some odd reason :-/ It runs for a good while after I select the iPhone2,1_3.1.2_7D11_Restore.ipsw, then stops with a message that says: \"The iPhone \"iPhone\" could not be restored. An unknown error occurred (1015)\". Anyone with an idea? Many thanks!
60 More Comments
Recent