Downgrade iOS 4.3 to iOS 4.2.1, iOS 4.1 (iPhone 4, 3GS, iPod Touch, iPad)

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You can downgrade iOS 4.3 to iOS 4.2.1 / 4.1 on iPhone 4, 3GS and iPod Touch 4G, 3G and iPad. Follow the steps below to downgrade iOS 4.3 to 4.2.1/4.1 firmware on iPhone, iPad and iPod Touch.
downgrade iOS 4.3 iPhone 4, 3GS, iPad, iPod Touch
If you’ve updated to iOS 4.3 beta to test it but now want to go back to iOS 4.2.1 or 4.1, this guide is for you. We’ll discuss following two methods to downgrade iOS 4.3 iPhone / iPad / iPod Touch firmware:

  1. Using TinyUmbrella (Recommended)
  2. By Editing Hosts file

IMPORTANT: You can downgrade iPhone 4, 3GS, iPod Touch, iPad only if you have SHSH blobs saved for 4.1/4.2.1 firmware in order to downgrade from iOS 4.3.

How to: Save SHSH blobs for iPhone, iPod Touch

How to Downgrade iOS 4.3 to iOS 4.2.1, iOS 4.1

Download your desired firmware for which you’ve SHSH blobs saved and want to downgrade to:

Method 1: Using TinyUmbrella

If you’ve SHSH blobs saved on Saurik’s server via Cydia, download them into your computer first. To do that:

  1. Connect your device, Fire up the TinyUmbrella and Check mark the Advanced Options.
  2. Select your device, firmware (the one for which you’ve SHSH saved at Cydia; 4.2.1, 4.1 or older) and Cydia as Location.
  3. Hit the save My SHSH button. that’s it.

Step 1 – DFU Mode

Put your iPhone into DFU Mode (How to: enter DFU Mode)

Step 2 – Start TSS Server

  1. Run the TinyUmbrella
  2. Hit the Display SHSH button to confirm that downloaded SHSH blobs has been cached by TinyUmbrella for iOS 4.2.1, 4.1 or older. (If you already have them in your PC, drag and drop the SHSH blobs in the TinyUmbrella window then hit the display SHSH blobs button to confirm).
  3. Now hit the Start TSS Server button.

Step 3 – Restoring The Firmware

  1. Open the iTunes.
  2. Hold down the Shift (Windows)/Alt (Mac) key and hit the Restore button.
  3. Select the downloaded firmware (iOS 4.2.1, iOS 4.1 or older) and let the restore process complete.

iTunes should bring up the error 1015, 1013 or 1011 message. Don’t worry, it’s normal. You’ve successfully downgraded your iPhone/iPod Touch firmware.

downgrade ios 4.3

Step 4 – Getting Out Of Recovery

Now in order to get out of recovery mode, hit the “Kick Device Out of Recovery” button on TinyUmbrella right below the Start TSS Server button or you can also use RecBoot. That’s it!

Method 2: Edit Hosts File

**We assume that you’ve SHSH blobs saved via Saurik’s server.

Download your desired firmware for which you’ve SHSH blobs saved and want to downgrade:

Step 1 – DFU Mode

Put your iPhone into DFU Mode (How to: enter DFU Mode)

Step 2 – Editing Hosts File

Now we are going to redirect iTunes from Apple Servers to Saurik’s server.

Windows:

Go to C:\Windows\System32\drivers\etc\ and locate hosts file.
Open the hosts file in Notepad.
NOTE: Win 7 and Vista users MUST run Notepad with admin privileges. Right click on Notepad app and select Run as Administrator.

Mac OS X:

Go to \etc\ directory and locate hosts file. Copy it on your desktop
Open the hosts file in TextEdit.

Add the following line at the end of the hosts file and then save and close the file:

74.208.105.171 gs.apple.com

Mac OS X users needs to copy the edited hosts file from desktop back to /etc/ directory and replace the older one.


(Click to enlarge)

Step 3 – Restoring The Firmware

  1. Now Open the iTunes.
  2. Hold down the Shift (Windows)/Alt (Mac) key and hit the Restore button.
  3. Select the downloaded firmware (iOS 4.1, iOS 4.0.1 or older) and let the restore process complete.

iTunes will bring up error 1015, 1013 or 1011 message. Don’t worry, it’s normal. You’ve successfully downgraded your iPhone/iPod Touch firmware.

downgrade ios 4.3

Step 4 – Getting Out Of Recovery

Now in order to get out of recovery mode, hit the “Kick Device Out of Recovery” button on TinyUmbrella right below the Start TSS Server button or you can also use RecBoot. That’s it!

Note: You must now remove 74.208.105.171 gs.apple.com line from the host file and save it. Doing this will let iTunes to prompt you about future updates from Apple.

Jailbreak iOS 4.2.1, 4.1

How to: Untethered Jailbreak iOS 4.2.1 on iPhone 4, iPad, iPod Touch 4G with RedSn0w 0.9.7b1

How to: Jailbreak iOS 4.2.1 with RedSn0w 0.9.6b4

How to: Jailbreak iOS 4.1 [All Guides]

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Updates:

Downgrade iOS 4.3.3

If this page or section of the page needs to be updated, Submit Request

Posted in: iPad, iPad Guides, iPhone, iPhone Guides, Tutorials on January 18, 2011

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Comments:

  1. draco809 18 January 2011 at 5:40 pm #

    does this delete everything on my phone? (does it restore my phone)

    Reply
  2. timo 18 January 2011 at 6:27 pm #

    i do upgrade my 3gs to 4.2.1 and it’s locked .. can i upgrade it to 4.3 and then downgrade it to 4.1 so i can unlock it ?

    Reply
    • iPhoneHeat 18 January 2011 at 6:48 pm #

      unlock depends on baseband, once the baseband is updated, it can’t be downgraded with iOS/firmware downgrade

      Reply
      • Musclenerd 18 January 2011 at 9:27 pm #

        No

        Reply
        • AfRoO 19 January 2011 at 1:03 pm #

          what is ur baseband, version

          Reply
    • lenjung 16 February 2011 at 1:58 pm #

      So… meaning if a phone is on baseband 6.15 there is no way to downgrade the baseband? Even with SHSH blobs?

      Reply
  3. rockstar 18 January 2011 at 10:34 pm #

    i have iphone 4 with 4.1 and 2.10… can i just do as u said.. like u know i can upgrade it to 4.2.1 and then i saw that 3gs users can upgrade and unlock… by the same procedure can i work out that

    Reply
    • Smitty 19 January 2011 at 10:23 am #

      If you have baseband 2.10, you can’t unlock. Stay where you are on IOS 4.1 until a future unlock is released.

      Reply
  4. userFromTurkey 18 January 2011 at 11:50 pm #

    Remember for unlockers: You cannot downgrade baseband (BB) !!!

    Reply
  5. sukhbira 19 January 2011 at 5:29 am #

    hi my name is sukhbir and i have
    Iphone 3Gs
    Model MC134X/A
    and i had not saved 4.1 shsh files. when i buy my iphone.installed
    firmware is 4.2.1 and
    BB version 06.15.00
    as u said i edit host file and start tss server with tinyumbrella and then with itunes i try to restore firmware 4.1 but itunes give me error that itunes could not restore the iphone(error21).
    please tell me that is it possible to restore firmware 4.1?

    well i am also so much thankful to u that with this my iphone is untethered. thanx alot :)

    Reply
    • iPhoneHeat 19 January 2011 at 1:55 pm #

      There’s no point in downgrading now.. n You can NOT without SHSH blobs..
      use RedSn0w latest beta to jailbreak (tethered)
      and use ultraSn0w to unlock..

      Reply
  6. jorous 19 January 2011 at 12:41 pm #

    I have upgraded my iPad 3G to 4.3 and have my shsh saved. I tried both methods to downgrade to 4.2.1 and got 1015 error as expected. The problem is that I cannot kick out of recovery mode. I tried tinyumbrella, ireb, recboot but no luck. I used Mac and pc but still stuck. I now upgraded back to 4.3 and I await your expert advise. Joe

    Reply
    • srk5816 15 February 2011 at 10:11 am #

      I have the same problem iOS4.3 beta and cannot downgrade using either method.

      Reply
      • jessjess52 10 April 2011 at 8:57 am #

        I had the same problem. I’m not entirely sure how to explain my fix but this is what I did. I downloaded greenpois0n jailbreak and while i was still plugged in and while the phone was still in recovery mode (plug arrow to itunes logo) I followed the jailbreak instructions. It ran the jailbreak successfully and rebooted. After reboot I closed Itunes. I unplugged the phone. when it rebooted I still had the usb -> itunes logo so i plugged it in and it asked me to restore from a previous back up. Ran it from my last backup and all is well now.

        Reply
  7. sukhbira 19 January 2011 at 6:41 pm #

    :( my iphone stuck in recovery mode.. i try to restore firmware 4.2.1 but at last itunes give error21. i try IREB to kick out recovery mode. even i use redsnow also. but no gain. tinyumbrella gives me warning that DONT TRY TO RESTORE YOUR IPHONE. what is this? how can i solve this?

    and thanx for answering my first questions IPHOHEHEAT :)

    Reply
  8. sukhbira 20 January 2011 at 4:50 pm #

    hi
    my iphone 3gs MC134X stuck on recovery logo.
    because my am trying to downgrade 6.15.00 from 4.2.1 to 4.1
    my bootrom is new but by mistake i click on new when redsnow ask for bootrom. then i start tinyumbrella and start tss server and otherside i trying to restore firmware 4.1 and the last itunes give error 2003 and 1015.
    am trying so many times to kick out ofdfu mode with tinyumbrella and recboot but no gain. am also trying to use redsnow ipod baseband but same problem, iphone stuck on recovery logo. please help me. how can i solve this problem? is my iphone dead for always?

    Reply
    • Smitty 20 January 2011 at 10:27 pm #

      Since you have 6.15 bb you can restore using custom firmware only that maintains your baseband.
      If you have a mac, use pwnagetool to make custom firmware, or you can download it here thanks to iphoneheat
      http://www.iphoneheat.com/2010/10/download-custom-ios-4-1-firmware-ipsw/
      you must have your shsh saved, and use tiny umbrella or modify hosts file.

      Reply
    • hundebellen 21 January 2011 at 3:25 am #

      same issue here. didn’t save the SHSH blobs. Any idea what to do or do I have to bin mu iPhone now?

      Reply
      • Smitty 21 January 2011 at 10:19 am #

        Try ireb, redsnow to kick out of recovery.
        You try the solution below that sukhbira posted.
        Without the shsh saved you can only upgrade, not downgrade. And with 6.15bb you must upgrade using only custom firmware to preserve baseband. Your only option is to restore to custom 4.2.1 firmy. If it works, go to cydia and save shsh!

        Reply
  9. vitruvi0ne 20 January 2011 at 10:36 pm #

    iPad here too stuck on recovery screen when trying to downgrade to 4.2.1. Unable to kick out of recovery period! I believe this is a first for me, and I’ve tried just about every beta for the iPad. Could this be some form of new protection? I too am able to flash back up to 4.3 and boot successfully. I’d be fine with that if only I could jailbreak this version.

    Reply
  10. Danny 21 January 2011 at 1:44 am #

    Same issue. Try to downgrade 4.3 to 4.2.1, each time the 1015 error can not be fixed via any tool. Forever in recovery mode.

    Reply
  11. sukhbira 21 January 2011 at 5:40 am #

    recovery logo stuck ? solution is here

    http://forum.gsmhosting.com/vbb/f456/3gs-recovery-logo-stuck-solution-here-1191554/#post6854552

    Reply
    • vitruvi0ne 21 January 2011 at 5:38 pm #

      Thanks, but… has anyone had success getting this to work with an iPad. I’ve attempted it: creating custom ipsw with PwnageTool from iPad 4.2.1 bundle, launch restore and get further in the process but still fail, then having to run a script to fix the ramdisk? That’s where it fails for me. Getting a little hard now. Am I doing something wrong??

      Reply
  12. Dhan Kumar rai 28 January 2011 at 5:23 am #

    Hello guys this Dhan Kumar. Please help me I have upgrade 3GS for the first time. No any shsh or no any udid is save or have I just got 4.3 to download from some web and I upgrade for the first time to my 3GS and now it’s been locked. Help me I wanna downgrade it. I don’t used it 4.3 I just wanna go to 4.2.1 it was so fast cool without jailbreak. Please mail me at dhankumarrai@gmail for how to downgrade to 4.2.1 without shsh or something. Thankyou

    Reply
  13. Izzy 5 February 2011 at 9:24 am #

    You can spoof downgrade BB if you can reprgram iPhone having the knowledge of IPSW code. Also you can get it ulocked for under $30 online. There are many websites that will do it.

    Reply
  14. Sam Prakash 6 February 2011 at 8:04 am #

    Hi
    My iPhone 3GS was tried jailbreak and unlock with iOS 4.2.1 and bb 6.15. Got stucked and recovered by iOS 4.2.1 custom restore firmware. The current shsh after bb update is stored now.

    Now the problem is when I tried downgrading to iOS 4.1 getting the error 3194 and not allowing to downgrade. With iOS and bb (4.2.1 / 6.15) can’t able to jb and unlock. Your help is highly appreciated. Thx.

    Sam

    Reply
    • rockstar 6 February 2011 at 3:22 pm #

      hey buddy,
      i also got the same thing when i was doing so and , all u should do is open C drive and go to windows>system32>drivers>etc>hosts> right click that and open as admininstrator and paste this “74.208.10.249 gs.apple.com” at the end of the page and save this and try restoring this. ull be able to do it… and unlock the same.. ohlaaaa

      Reply
  15. Brian 9 February 2011 at 1:18 am #

    If you’re downgrading from 4.3 beta 3 to 4.2.1 on the iPad and you can’t get rid of the 1015 error or exit out of recovery, run GreenPois0n RC5. Chances are you are just stuck in recovery but still on 4.2.1. This seemed to work for me :) Which was really my reason for downgrading anyway… to get my jailbreak back. haha

    Reply
  16. Vreo 10 February 2011 at 5:34 am #

    Hi, I have a big problem. I installed 4.3 beta. I have my shsh backed up at saurik (cydia) servers and even locally with TinyUmbrella 4.21.07. I have tried via saurik servers (hosts file) and with TinyUmbrella’s server. I keep getting error 1015 over and over. I tried the “Error 1015 fixer” after installing the libusb filters and nothing. I tried “kicking” out of recovery mode the Ipad with TinyUmbrella and it restarts to the same “connect to iTunes” logo. I have restored with the original .ipsw 4.2.1, I have tried again the 4.3 ipsw and nothing with neither. I think one big problem is that when I connect the device, in Tiny Umbrella the ECID is different each time I connect it (Dec and Hex) and it is never the same as the original one, I don’t know why this happened. I tried another computer with a clean install of itunes and nothing. I have read lots of forums and tutorials and everyone seems to be going out of the restore (or DFU) modes easilly after that restore but I cant. My Ipad was first jailbreaken with redsnow but later I restored it to factory settings because I didn’t liked it jailbroken, so when I installed the FW 4.3 it was not jailbreaken. Sorry to bother, hope someone can help me.

    Reply
    • jorous 11 February 2011 at 8:33 am #

      downgrade again using tiny umbrella that jailbreak with new Greenpois0n and you ipad will kick out of recovery. worked for me

      Reply
      • Vreo 11 February 2011 at 10:17 am #

        Wow, thx very mumch. It worked, I tried jailbreaking with redsnow lots of times and it didnt but with GreenPoison it work. Hi to my iPad again. Thx jorous.

        Reply
      • srk5816 15 February 2011 at 10:37 am #

        same issue however retrying and using jailbreak didnt work can still go back up to beta 4.3 but nothing below works i have all my SHSH blobs and have tried several other methods all resulting in me restoring it back to 4.3 disappointed…any ideas

        Reply
        • srk5816 15 February 2011 at 10:47 am #

          forgive me it worked you guys are above reproach

          Reply
          • iPadUser 28 March 2011 at 12:07 am #

            I had the same problem and this method worked.

  17. derik12 17 February 2011 at 6:47 am #

    i have a iphone 3gs 4.2.1 an i want to downgrade it but i dnt wanna restore it is there anyway to do it without restoring the whole iphone ive tried hittin update but it doesnt work im usin the latest tinyumbrella an everything still no luck get error code 21 on itunes what am u doin wrong?

    Reply
  18. ian 10 March 2011 at 10:41 pm #

    hey there , tryed to update it to 4.3 via itunes , got the 1015 error phone dead , downgraded it to 4.2 again . any ideea how to update to 4.3 or we need to w8 for a 4.3 jailbreakd via redsnow or greenp? thx

    Reply
  19. MattyBur 11 March 2011 at 1:37 pm #

    If I downgrademy iPhone4 to 4.2.1, from 4.3, will it erase everything on my phone, like music, apps, photos, contacts etc, or keep them intact?

    Also, does this work without jailbreaking the phone, because I’d rather not do that.

    Only reason I want to downgrade is because my favourite app, Polarize, is now broken in 4.3 and the developer stopped working on it some time ago, so there’ll never be a compatible update.

    Thanks

    Matt

    Reply
  20. MULAWI 22 March 2011 at 5:07 am #

    Hi
    i have a problem.

    i did restore my firmware 4.2.1 with TinyUmbrella by running TSS Server. After the Restore his stay in the DFU Mode, i did try “Exit Recovery” on TinyUmbrella, i did try RecBoot but nothing help… i dont know, what can i do? Can some one tell my HOW DO?

    Thanks to all…

    Reply
    • lkr 22 March 2011 at 8:01 am #

      I have the same issue. Don’t know what to do…

      Reply
  21. hashim 22 March 2011 at 11:19 am #

    What happens if you did not save your shsh on saurik’s server?

    Cause I bought a factory unlocked iPhone 4 which was already on 4.3. Is there any means to downgrade to 4.2.1 now?

    Reply
  22. Issac 27 March 2011 at 4:01 pm #

    I had problems with my iphone 4 4.1 when i tried to upgrade to 4.3.1. i finally did it. it got stuck so many times. Now on 4.3.1 bb is 04.10. it was already 02.10. does this mean that i am screwed since no unlock was gonna come out for 02.10 not to mention 04.10??? Can I Jailbreak it 4.3.1??? Or can I downgrade to 4.1 again??? if so how??? I have no clue about SHSH but I had jailbroken the previous ios 4.1!!! help pleaseee….

    Reply
  23. derekstaroba 1 April 2011 at 10:09 pm #

    Works Good.

    Reply
  24. aboothalibkt7 5 April 2011 at 2:08 pm #

    Hi
    i have a problem.
    i did restore my firmware 4.2.1 with TinyUmbrella by running TSS Server. After the Restore his stay in the DFU Mode, i did try “Exit Recovery” on TinyUmbrella, i did try RecBoot but nothing help… i dont know, what can i do? Can some one tell my HOW DO?
    Thanks to all…

    Reply
    • iPhoneHeat 5 April 2011 at 11:49 pm #

      Put into DFU Mode and jailbreak with GreenPois0n

      Reply
  25. kkaustubh 8 April 2011 at 3:39 pm #

    i live in india and have an iphone 4 bb 4.10.01 and accidentally upgraded to 4.3.1 i jailbroke it but the network stays just at no service….pls help

    Reply
  26. ahmad 15 April 2011 at 6:39 pm #

    Hi ALL,

    ANY NEWS REGARDING UNLOCKING IPHONE 4 4.3.1 BASEBAND 04.10.01 , PLEASE ADVISE ME. THANKS
    AHMAD

    Reply
  27. kaku 16 April 2011 at 9:19 am #

    hello..i am trying the same step to downgrade my iphone 4 4.3.1(8g4) 2-10-04 baseband with tinyumbrella tss server command but itunes give error 1600″..nd i xplored abt reason of tht error..shows i hav to put it in recovery instead of dfu mode..but the problem with recovery mode is also coming..

    Reply
  28. bun bora 4 May 2011 at 5:26 am #

    Hi Pannda, does the soft unlock depend on the Version or depend on Base-band?

    Reply
  29. POmme 16 May 2011 at 2:43 pm #

    I know cannot downgrade baseband (BB), but Can I downgrade my IPhone 4 ios: 4.3.1 BB: 4.10.0 to the ios: 4.1 then I can Unlock It or show me a other way to unlock it cause Now I use it like a IPod….

    Reply
  30. Suneel 19 May 2011 at 10:26 am #

    How to get and download SHSH blobs
    What r dey
    How to down load firmware
    And get blobs on comp
    I’m 10 yrs?

    Reply
  31. Lilesjamie 20 May 2011 at 11:50 am #

    I have a brand new iPhone 4 and it’s running 4.3.1. I want to downgrade to 4.0.1 so I can use jailbreakme.com to jailbreak it. Does this work and if not what else can I use? Last time I tried I had to get a new iPhone(which was today). Luckily they did it for free. But I’m not taking the chance of using snowbreeze or greenpoison or any of those again. Please and thanks.

    Reply
  32. James 30 May 2011 at 5:03 am #

    Hi guys,
    I did all step well, but when i hit exit recovery it took so long and seems like nothing thing happened, still into recovery mode? What can i do? thanks

    Reply
  33. pbc 15 June 2011 at 3:19 am #

    I’m running ios 4.3.3 (8J2) with baseband 04.10.01…
    Is there any hope at unlocking this without the use of a gevey sim card?
    Is there any hope at all at unlocking this version of IOS?
    I have an international iphone4.

    Thanks.

    Reply
  34. behija 26 June 2011 at 2:56 am #

    please help
    i have iphone 4 4.3.3 BB 04.10.01
    It is jailbroken but i need to unlock, tryed repo.ultrasn0w many times but no luck. Do anyone has any ideas how to unlock this version? If I upgrade to beta5 can i unlock after i jailbreak?

    Reply
  35. race2840 29 June 2011 at 8:00 am #

    thanks

    Reply
  36. Jason 1 July 2011 at 9:28 pm #

    Hey
    I did everything via tinyumbrella

    but on the last step, for some reason, im still stuck on recovery mode, and it wont get kicked out of it

    idk why

    Reply
  37. darren 9 July 2011 at 9:28 pm #

    IM GONNA CRY!! i just upgraded my baseband i upgraded by itunes download!! 3 years of jailbroken magic gone for a while :*

    Reply
  38. recond9 10 July 2011 at 3:45 am #

    heloo everyone…i have an 3gs and i have a problem..
    a few hours ago i update it via itunes to 4.3.3 and i jailbreake it with redsnow,(i also choosed the 6.15.00 ipad base-band, because i need career unlock).it all worked fine but i had no signal(no service).so now i dont knsow what to do, because i cant restore with iTunes,and i don’t know what firmware to install on it..please help me!

    Reply
  39. pbarjatiya 22 August 2011 at 8:39 am #

    Hi I want to downgrade from 4.3.5 to 4.1 can this work? As when I tried last time it ended in the recovery more. The current details of the phone are base band: 4.10.1 and firmware: 4.3.5. Please help.

    Reply
    • pbarjatiya 22 August 2011 at 8:41 am #

      Also I dont have the .SHSH saved. Since I was new I dint knew what that is and what to do. Can I get .SHSH from someone modify it somehow and use that.

      Reply
    • jbetts 3 September 2011 at 12:54 pm #

      I have successfully downgraded my iPhone 3GS to 4.1 from 4.3.5, without any SHSH blobs, due to battery drain issues.

      It appears Apple are still signing 4.1 for 3GS.

      Step 1:
      Put phone in DFU mode.
      Step 2:
      Restore firmware using iTunes (as above)
      Step 3:
      Use TinyUmbrella to get out of restore mode after a 1015 error. [I had to disconnect the iPhone from the computer after using TinyUmbrella.

      Now restore from backup sync etc using iTunes.

      Reply
  40. feliph1 27 August 2011 at 1:32 am #

    I have an Iphone 4 with 4.3.3 and bb 1.59.00 I want to downgrade to 4.3 if I use the Tinyumbrella method would I still be able to unlock with ultrasnow?

    Reply
  41. x 3 September 2011 at 12:57 am #

    yes

    Reply
  42. jake 10 September 2011 at 6:12 pm #

    I get error message 1600 and it stays in 4.3.5

    Reply
  43. HomeStoned 11 September 2011 at 3:13 pm #

    I’m looking for some advice pls
    Okay iphone 4 gsm factory 4.0.1 firmware baseband 01.59.00 saved SSH blobs with TinyUmbrella.
    updated to 4.1 i didn’t mind about carrier unlock so got the new baseband with 4.1 of 02.10.04.
    then updated to 4.3.3 with baseband 04.10.01,
    now i’m looking to sell phone soonish, so i tried to restore 4.0.1 using the correct method of ireb, tinyumbrella, then itunes, i can restore to 4.0.1 okay but my baseband stays at 04.10.01
    ssh in tinyumbrella are:
    4.0.1
    4.0.2
    4.1
    4.2.1 & so on upto 4.3.5 even though i have not installed 4.3.5
    Totally confused

    Reply
  44. gbon_bd 2 October 2011 at 8:00 pm #

    My iPhone 4 currently in DFU mode. I tried to update my ios from 4.2.1 to 4.3.3 with snowbreeze 2.7.3. But when i restore custom firmware an unknown error occurred (3195). My baseband was 03.10.01. I am afraid may be I choose wrong option. Is there any process to solve my problem? Can I upgrade my baseband so i can unlock with ultrasnow.. ?

    Reply
  45. jackolano 4 November 2011 at 5:17 pm #

    What is the point in all this DOWNGRADING since on its own it does not have anything to do with the base band, to what it all boils down to in unlocking?
    I have 4.3.3. iPhone with 4.10.01. if I at any moment felt like downgrading it to 4.2.1 …or anything it is not going to do anything about the baseband which stays the same… bollocks!!!

    is there any option to alter the 4.10.01? no matter whether by downgrading or …something to get the frequency adapted?

    Reply
    • HomeStoned 5 November 2011 at 8:34 pm #

      hi,
      By downgrading & using tiny umbrella you can change the baseband only if you have saved some files “SSH BLOBS”
      so therefore being able to get a carrier unlock.
      there is no frequency work around, there is a geavey sim
      but i’m not that worried about an unlcock.
      i di buy one but i don’t want that & my sim in my phone thanks..

      there should be a tiny umbrella sometime soonish that ill allow it to be much easier to inter swap firmwares & basebands.

      Reply
  46. ricco 8 November 2011 at 2:13 am #

    hello there i have an iphone 4 was locked with rogers , i got it unlock and got it working with virgen mobile now they came up with the new software 5.0 i lost the internet and text
    so the provider toll me to upgrade software to 5.0 and so i did
    now my phone does not work and its locked back to rogers again and now no one an unlock this phone what are my choices besides going back with rogers and singe up a3 years term ?? any one please ,,,.. thanks email me at ricco0690@hotmail.com

    Reply
    • sowmi 19 December 2011 at 1:17 pm #

      i cannot restore my iphone..it shows error 2003 have occured..wt should i do now:(

      Reply
  47. greenturtle 26 January 2012 at 9:13 am #

    Hi, I erased my iphone and am trying to get ios 4.2.1 back on it. When I follow the above steps for changing the host file itunes tells me it can’t contact the apple update center and thus will not allow me to update to 4.2.1. Need help. Thanks in advance!

    Reply
  48. happy 9 February 2012 at 11:31 am #

    i have 3gs 4.1 version. can i change to 4.3 and can i jailbreak 6.15 baseband unlock plz rply me

    Reply

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