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

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Posted February 7, 2010 at 1:00am by iClarified · 325638 views

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.

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.

Step Five
Choose to view all files from the dropdown then navigate to C:WindowsSystem32driversetc and select the hosts file. Click the Open button.

Step Six
Append 74.208.10.249 gs.apple.com to end of the file.

Step Seven
Select Save from the File menu to commit your changes.

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.

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prasad - August 25, 2011 at 6:09am

error 3194 iphone4 custom ipsw chang host my os is windos halp

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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!

rajuneela - July 14, 2010 at 9:51am

hi, I try to save this Host file it gives an error " Can not create C:/document and setting\system32\drivers\etc\hosts file. Make sure that the path and file name is correct".Please explain me how to save this file . I am on Vista home premium 64bit

Fidler - July 22, 2010 at 3:50am

Rightclick on the hosts file and make sure "read-only" is NOT checked.

rajuneela62 - July 14, 2010 at 9:05am

hi, I try to delete all data in my iphone 3gs. I phone is hanged and came to "Apple logo". the battery is low and it will start charging (with red- battery ) after few miinute again pops up apple logo, I am able to got recovery mode. Below are the detail of my phone: 3GS, 3.0.1, 32GB, jailbreaked and unloacked. I dont have SHSH. can I upgrade to 3.1.3. Please advice me, i don't mind to upgrade to 3.1.3,I want my phone back!! I tried I recovery also.. no use. thanks in advance.

Shamanwee - July 2, 2010 at 1:00pm

All i get is error 3194

awais - September 23, 2010 at 1:01am

im having this very same issue.. i have iphone 3gs as well as iphone 4.. both are on version 4.0.2 im well aware of the hosts file and ive done it properly, yet im having this error 3194 anyone with the solution?? please help

stuart - June 24, 2010 at 9:27pm

hi i had a previous jailbroken version of 3.1.3 with spirit , i did back up on cydia . lastnight i jumped the gun and updated to 4.0 with itunes , im trying to follow your step by step but iv gotten the 1015 error twice and then tryed to re jailbreak like it says but im stuck in DFU mode how do i re jail break

johnnymatics - April 17, 2010 at 7:58pm

Hello Everyone! I'm trying 2 downgrade my 3GS from 3.1.3 to 3.1.2...but its stuck at "verifying iphone restore with apple"....ny ideas on how to overcome that? I would appreciate! Thanks

boblp - April 8, 2010 at 11:49pm

i cant save the edited hosts file.. it keeps converted to txt format.. and ended up with two hosts file.. the original (hosts) and the edited (hosts.txt). what should i do? thanks in advance

boblp - April 10, 2010 at 1:44am

nvm.. just remove the .txt n it should be fine..

Bogus - March 8, 2010 at 10:26am

This works perfectly!! I just formated my iphone 3GS 3.1.2 jailbreak and unlock perfectly!!! Thank you

Baz reed - March 8, 2010 at 11:04am

Did you just follow the steps posted here? I've tried it a few times & keep getting a message saying the device isn't eligible for requested build, running out of options now, stuck on 3.1.3

VifferKid - March 10, 2010 at 8:27pm

Having the exact same problem! Is this most likely because my device was never registered with cydya and doenst have an SHSH ECID? any help is appreciated.

The Luong - March 6, 2010 at 10:40pm

and btw, my iPhone 3G is upgraded to the latest 3.1.3 - does that mean that if I want to downgrade it to 3.1.2 or unlock/jailbreak at 3.1.3, I need to also downgrade the baseband? Thanks!~

The Luong - March 6, 2010 at 10:36pm

I've done all 7 steps and have had my iPhone 3G (locked AT&T, 3.1.3 version, never been unlocked/jailbroken) in DFU mode. Though iTunes does not allow me to downgrade it back to 3.1.2. I don't have a Mac so I can't use the Pwnage Tool for 3.1.3. Any clue as to what else I should do to downgrade it? Thanks a bunch!

iTach 4G - February 22, 2010 at 3:11pm

i don't know if i saved my shsh file to cydia..? (dont know how to do and how to check it, im noob) but, i try downgrading my iphone 3gs 3.1.3 back to 3.1.2.. it downgrades succesfully! but its still in 05.12.07 baseband. my question is, can i unlock it with the new firmware?? -i already jailbreak it using blackra1n rc3, but im not yet trying to install cydia and unlock. after downgrading.. **iPhone 3G[S] 3.1.2 - Firmware 05.12.07 +blackra1n RC3 @ Art - the process is still the same in windows7 64, but rmember when opening notepad to "Run as Administrator"

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