Downgrade iOS 5.1 to iOS 5.0.1 without SHSH Blobs

Downgrade iOS 5.1 to iOS 5.0.1 without SHSH Blobs, yes you read that right downgrading from iOS 5.1 to iOS 5.0.1 is now possible without SHSH blobs, as most of you know to downgrade an iDevice to a lower firmware version requires SHSH blob for that iDevice saved on the lower version of firmware earlier. But, using the following technique you can enjoy the full untethered jailbreak iOS 5.0.1 even if you have  accidentally upgraded to iOS 5.1 and not saved your SHSH blob. This trick can be used to Downgrade iOS 5.1 to iOS 5.0.1 , iOS 5.0 and even iOS 4.3.3, however this process is a bit complex if you have your SHSH blob then you can follow Downgrade iOS 5.1 to iOS 5.0.x with SHSH blobs.

downgrade-ios-5.1-to-ios-5.0.1

Supported Devices:

  • iPhone 4 GSM/CDMA
  • iPhone 3GS
  • iPod Touch 3G/4G
  • iPad 1

Requirements to Downgrade iOS 5.1:

How to Downgrade iOS 5.1 to iOS 5.0.1 or Earlier without SHSH blob:

  1. Edit Your Hosts File – Windows users browse to Windows\System32\Drivers\etc to access the Hosts file, open this file in notepad and add 74.208.10.249 gs.apple.com on a new empty line at the end and save it.
  2. Run Redsn0w – Click Extras then click Select IPSW and select the IPSW Firmware file you want to downgrade to.
  3. Move out of Extras and Click Jailbreak.
  4. Redsnow will try to jailbreak using the IPSW and it will fail putting the Device in Recovery Mode.
  5. Run TinyUmbrella, Click your Device name on the Left and click Start TSS Server.
  6. Run iTunes and Press Shift on windows or Alt in Mac and click Restore and select iOS 5.0.1 or iOS 5.0 IPSW file.
  7. If everything is ok you will get iTunes error 1013, Close iTunes.
  8. Open iFaith and Save SHSH File.
  9. Now, Run Sn0wbreeze and Create a Custom IPSW file from the Original IPSW we were using so far.
  10. Open iTunes Again and Shift + Restore with this new IPSW file.

Done, you have successfully Downgraded from iOS 5.1 to lower Firmware.

Update : Thanks to Ralph for the Supported Device update.

Update : This Tutorial is Not Working for many Users and those who got success are more likely on iPhone 3GS with Old BootRom, so we Term this Tutorial as “NOT WORKING“. However, if you have free time you can give it a try.

For any Problem please use our Forum to Ask A Question. Do share this post and Spread the love.

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67 Responses to “Downgrade iOS 5.1 to iOS 5.0.1 without SHSH Blobs”

  1. Tim May 6, 2012 at 1:00 pm #

    I somehow did a restore with holding shift and did for 5.0.1 with my phone 4 and i was able to pull a shsh from it for the downgrade with tinyumbrella. I was able to restore. I have done the impossible

    • Ashish May 6, 2012 at 5:57 pm #

      that’s great, you are one of the lucky ones.

    • Arbaaz May 10, 2012 at 5:49 pm #

      How did you manage to get ios5.0.1 shsh blob???

  2. Johnny May 9, 2012 at 3:35 pm #

    I’m constantly having the 2500 error.. What should I do?

    • Ashish May 9, 2012 at 10:16 pm #

      guess it won’t work for you.

    • Ralph May 10, 2012 at 5:54 am #

      Guys! Just wait for the newest Redsn0w. According several reliable blogs, it should support downgrade to iOS 5.0.1. Even for iPad2 and iPhone 4S.

      • Ashish May 10, 2012 at 5:58 am #

        yes, i will write tutorial on it as soon it come out. stay tuned guys.

  3. Mas Rie May 10, 2012 at 4:25 pm #

    hi there i got error 20 in itunes
    so how to continue this
    thanks

  4. usman May 10, 2012 at 5:55 pm #

    i have a iphone 4 n i accidentally updated to 5.1.1 n as u said i did the jail break selecting ipsw 4.3 and it wont jail break ! it stops after loading text in a black screen ? and it wont go to recovery mode also ? plzz help

    • Ashish May 10, 2012 at 9:33 pm #

      jailbreak iOS 5.1.1 selecting iOS 5.0.1 IPSW. if you are looking for the downgrade else select iOS 5.1 IPSW for a normal jailbreak

  5. jayson May 17, 2012 at 8:12 pm #

    Hi there
    When I tried to restore on itunes on the 6th step, i got error ’2005′.
    What should i do?

    • Ashish May 17, 2012 at 11:36 pm #

      this method now throws random error and there is no definite fix for it.

  6. druglane July 12, 2012 at 12:36 pm #

    Did anybody downgrade iPad 1 from iOs 5.1.1 to 4.3.x without having 4.3.x shsh blobs?