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Thread: Downgrade iphone 3GS without shsh on file , from 4.0 to 3.1.3 by modify firmware

  1. #21
    I dont have the shsh blobs, so i cannot downgrade,
    what im going to do? sell my phone?

  2. #22
    Superbad Modder-ator Simon's Avatar
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    Just wait, a new jailbreak will be out soon. Just make sure you have saved your SHSH for 4.0.1 now with firmware umbrella.

  3. #23
    Livin the iPhone Life
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    I am positive of one thing, this has been looked at very carefully by the people who could do it. Maybe it will happen, but more likely it won't.

    The easiest and most likely solution is a friendly-market leak. Happens to everybody, why not Apple?

  4. #24
    ok iŽll wait, but if someone can do it please tell me

  5. #25
    Retired Moderator iYeow's Avatar
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    Quote Originally Posted by neng212 View Post
    it is possible i did when when i put your phone in dfu mode, then put the official 3.1.3 onto it, it will go into a recovery loop, then use blakRa1n to brute force it out of the loop and u will be on 3.1.3 it takes a while to do but it works. message back your results
    It is definitely not a 3GS, the reason is if there is no shsh, Itunes will pop up a message in the very beginning saying ," Ineligible for the required build ", so guys don't bother waiting for his steps, it is not going to happen. If it can be done, then all my replies to all those threads proves nothing.

  6. #26
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    Here is what to do! No Screens Sorry! and i know this is a different threat but some people may use it

    DOWNLOAD iRECOVERY!
    1) Install libusb from the downloaded pack for Windows users only Mac users can skip this step. If you are on Windows Vista then follow the steps given below to install Libusb-Win32.

    * Right click on this file. Select Properties | Compatibility Click the “Run this program in compatibility mode” box and select “Windows XP (Service Pack2)” from the drop down list.
    * Right click again and select “Run as “Administrator”. Follow the installation instructions. Running the test program list the usb devices plugged into my computer – but not my new device.

    2) Start iRecovery in Terminal / Console with iRecovery -s

    3) Execute the following commands:

    setenv auto-boot true

    saveenv

    /exit

    4) Reboot your iPhone (keep holding home + sleep for 10 seconds).

    5) Download 3.1.3 Firmware for you iDevice...

    6) Download Umbrella.

    7) Download USBView

    8) Run USBView

    9) Check the option "Config Descriptors"

    10) Press F5 and Search for your iDevice.

    11) Go to the right panel and look at: iSerialNumber , Look for your ECID!

    12) Write it somewhere (notepad or wordpad )

    13) Open Umbrella and select your device

    14) Check Advanced Options and Paste your ECID

    15) Select the Firmware you want and that you have been ALREADY USED WITH CYDIA! (or it wont work) .... I Did 3.1.3 cause 3.1.2 was never jailbraked from me

    16) Select Cydia if not did and Click on "Save My SHSH"

    17) If you did not get any errors your Good! (if you get an error select other firmware

    18) Click on Start TSS Server ,after that click "Display SHSHs" To look if you got it and if its good... (Sometimes you must redownload it)

    19) When you did that restart iTunes or Start iTunes if you did not did before.

    20) Change your iPhone to Recovery Mode and Select The .IPSW you want with holding the "Shift" Bottom and click Browse.

    21) It must Restore now, you will see if everything is good also on your iPhone that its installing.

    22) Now let it keep running until you get an error of iTunes "1500"

    23) Go to Umbrella again and Click on "Kick Device Out of Recovery"

    24) Done!

    Well that all!
    Please Rep +
    Last edited by Jorgos9; 2010-07-22 at 06:01 PM. Reason: ...

  7. #27
    Hi Jorgos9

    Are there need
    SHSH blobs file ? Or the device must be jailbroken before ?

    I want to downgrade to 3.1.2 or 3.1.3 Now I'm stuck in iOS4.0
    I'm old bootrom non jailbreak

    please help

  8. #28
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    You can't downgrade a 3GS without SHSHs so don't bother.
    We're all just toymakers in the game of life.

  9. #29
    This is what I did to get my 3G downgraded to 3.1.2
    I need to get a 3GS to see if this will work also but if someone that has a 3GS wants to try this let us know how it worked for you.

    Remember this is for firmware 3.1.2.

    First you will need these :
    redsn0w-win_0.9.4
    Official 3.1.2 firmware
    umbrella-4.01.03

    1- You will need to change your hosts file IP for Apple to
    74.208.10.249 gs.apple.com from 127.0.0.1 gs.apple.com

    2- Use umbrella-4.01.03 to save your shsh blob
    Start the TSS server after saving your shsh blob

    3- Put your 3G iphone into DFU mode
    Hold the power button and home button together for 10 sec. then hold down the home button for 10 sec

    4- iTunes will see your 3G in recovery mode

    5- Restore to official firmware 3.1.2
    Make sure you hold down the shift key before selecting the restore

    6- iTunes will start the restore and error will come up (1015) at the end that is normal

    7- Your 3G will be in recovery mode with the iTune restore logo

    8- Don't worry it's OK

    9- Use umbrella-4.01.03 to kick it out of recovery mode

    10- Now you should see the none activated screen were you can only make emergency calls

    11- Power down your 3G by holding down the power button for 5 sec then slide to power off

    12- Run redsn0w-win_0.9.4 to jailbreak your and activate you 3G

    13- Now you should have a jaidbroken and activated 3G

    Sorry this guide is for those who have done this before.
    Maybe someone can add some more details on how to.
    Last edited by XFaega; 2010-07-22 at 11:14 PM.

  10. #30
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    Quote Originally Posted by XFaega View Post
    This is what I did to get my 3G downgraded to 3.1.2
    I need to get a 3GS to see if this will work also but if someone that has a 3GS wants to try this let us know how it worked for you.

    Remember this is for firmware 3.1.2.

    First you will need these :
    redsn0w-win_0.9.4
    Official 3.1.2 firmware
    umbrella-4.01.03

    1- You will need to change your hosts file IP for Apple to
    74.208.10.249 gs.apple.com from 127.0.0.1 gs.apple.com

    2- Use umbrella-4.01.03 to save your shsh blob

    3- Put your 3G iphone into DFU mode

    4- iTunes will see your 3G in recovery mode

    5- Restore to official firmware 3.1.2

    6- iTunes will state the restore and error will come up (1015)

    7- Your 3G will be in recovery mode with the iTune restore logo

    8- Don't worry it's OK

    9- Use umbrella-4.01.03 to kick it out of recovery mode

    10- Now you should see the none activated screen

    11- Turn your 3G off

    12- Run redsn0w-win_0.9.4 to jailbreak your and activate you 3G

    13- Now you should have a jaidbroken and activated 3G

    Sorry this guide is for those who have done this before.
    Maybe someone can add some more details on how to.
    You don't actually need to edit your hosts file as restoring to 3.x on a 3G doesn't require SHSH blobs.
    We're all just toymakers in the game of life.

  11. #31
    3G doesnt need SHSH blobs, i still can downgrade to 3.1.2 3.1.3 easy, but 3GS you do need SHSH blobs, when you check for SHSH if cydia was save or not, the list does not have 3G but only ipod,ipad and 3GS

  12. #32
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    ^^^NOTE EVERYBODY !!!!

    Starting with 4.0, the 3G DOES NEED SHSH blobs for 4.x.

    Save 'em. Save 'em. Save 'em. Save 'em. Save 'em. Save 'em.
    Make Your Life Easier in Cydia

    NOTE: This does NOT effect restoring to 3.x software, only 4.x!!

  13. #33
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    Quote Originally Posted by nuieskater View Post
    Hi Jorgos9

    Are there need
    SHSH blobs file ? Or the device must be jailbroken before ?

    I want to downgrade to 3.1.2 or 3.1.3 Now I'm stuck in iOS4.0
    I'm old bootrom non jailbreak

    please help
    You need SHSH But what firmware did you had before 4.0?
    And in need to know if it was jailbroken
    Than i can help you further.

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