Unlock iPhone 4 – 3GS iOS 5.1.1 With Ultrasn0w 1.2.7

How to Unlock iPhone 4 – 3GS iOS 5.1.1 With Ultrasn0w 1.2.7 - Few minutes ago Ultrasn0w 1.2.7 was released by iPhone Dev-Team to unlock iOS 5.1.1 on iPhone 4, 3GS.

Unlock iPhone 4 - 3GS iOS 5.1.1

Note:

You have to know that updating your firmware to iOS 5.1.1 will update your baseband the reason that will let you not able to use ultrasnow unlocking solution so we recommend to use to use the link posted here to preserve your baseband while upgrading to iOS 5.1.1.

Ultrasn0w 1.2.7 Supported Basebands:

  • 01.59.00
  • 04.26.08
  • 05.11.07
  • 05.13.01
  • 05.12.01
  • 06.15.00

Unlock iPhone 4, 3GS On 5.1.1 With Ultrasn0w 1.2.7 :

Step 1: Jailbreak your iPhone on iOS 5.1.1 using the links below:

Step 2: After jailbreaking your device Launch the Cydia application then select “Manage” –> “Sources” then “Add” and Write down the link below:

http://repo666.ultrasn0w.com

Unlock iOS 5.1.1 on iPhone 4 / 3GS With Ultrasn0w 1.2.7

Step 3: Open the added repo (Step 2) you will find ultrasn0w tap on it and press install then Confirm at the right corner to install ultrasn0w 1.2.7 to unlock iOS 5.1.1 on iPhone 4, 3GS.

Unlock iPhone using ultrasn0w 1.2.7

How to Factory Unlock iPhone 4 – 3GS iOS 5.1.1 Using MEI Unlock:

Step 1: Go to MyIMEIUnlock.com

Step 2: Go to iPhone IMEI Permanent Unlock page.

Step 3: Check Your Country and Network

Step: 4: Place an Order

Step 5: Wait for Confirmation Email.

Step 6 : Connect your iPhone to iTunes [ Congratulation Your iPhone has been Unlocked]

Why My IMEI Unlock.com :

1- Read what Their Testimonials Says ?

2- What is Google Shop Rate For them [ See Here ]

152 Comments + Add Your Comment

  1. daniel says:

    i have an iphone 3gs and the jailbrake worked a charm a big thanks but im trying to unlock it but im on 05.16.05 …. 5.1.1
    please some one help thanks

    • jc says:

      hey daniel i have the exact same problem any solution yet??

    • James says:

      Im on 3GS and on iOS 5.1.1 .. I have baseband 6.15.00 and the new Ultrasn0w still wont unlock my phone.

      • Melvin says:

        I have thesame problem! I DONT KNOW WAT TO DO

        • Scott says:

          Use redsn0w 0.9.14b1 to downgrade your baseband from 6.15 then unlock if you are on 5.16 baseband you can update to 6.15 then downgrade to baseband 5.13 to unlock with redsn0w

      • Veronica says:

        Hey! I have the exact same issue and haven’t been able to resolve it. Do you have any info. Were you able to make it work?
        Thanks in advance!!

    • doris says:

      Same here 3GS, 05.16.05. Any solutions yet???

      • ahmed says:

        i had the same problem of unlocking fixed by the following
        1 restore to 5.1.1
        2 insert the original Sim to active the phone via iTunes
        3 jailbreak by absinthe
        4 open cydia and install ultrasn0w 1.2.7 respring
        5 insert onther carrier Sim and it worked
        n b :3gs bb 6.16 ios 5.1.1

        • harty says:

          i dont have original sim card i have iphone 4 with IOS 5.1.1 using baseband 04.12.01, just unlock through redsnow and i did install ultrasnow but yet the phone still showing NO SERVICE.. what to do??

    • Alex says:

      Hello everyone, facing the same problem with unlocking 3gs, bb 6.15 ios 5.1.1.

      Please, suggest what to do ?

      • ruthie says:

        hey i have iphone 3gs, baseband 6.15 and what i’ve done is that i used the latest redsnow 0.9.14 beta 2. then i ticked the “downgrade to ipad baseband”. it worked for me.

    • eliel says:

      u have to use redsnow 0.9.14b1 after that go to cydia,source,repo666.ultrsnow.com after go to search ,ultrasnow n install ultrasnow 1.2.7

  2. Jas says:

    Thanks again for the jailbreak but in the process I accidently updated the baseband, is there any eta on unlocking the iphone 4 5.1.1 on baseband 04.12.01. Thanks in advance for any help.

  3. Bilal says:

    Does updating 6.15 fixes gps issue

  4. mub says:

    hello guys, ihave a problem
    i already jailbroked my phone and the apps like safari and cydia crashes and when i try to jailbreak with Absinthe it says already jailbreaked.
    please help me with now waht should i do excatly
    thnk u

  5. I simply want to say I’m newbie to blogging and site-building and absolutely loved this page. Likely I’m going to bookmark your blog post . You really come with perfect posts. Regards for sharing your web site.

  6. Joe says:

    Iphone 3gs, jailbreak it firmware 5.1, installed ultrasn0w still getting no sevice, baseband 06.15.00 tried to install ultrasn0w fixer but still no service. What to do now? Please help. Thanks

    • arjun says:

      yea i had the same problem. i first jailbroke via greenpoison, found out i had the wrong baseband, then built a firmware with iPad baseband with snowbreeze, but ultrasnow still didnt work…help!

      • marcus says:

        install a pre activated custom firmare with 6.15 baseband and jailbreak built in, then ultrasnow respring, turn 3g off, sorted

    • afiqafiq says:

      restore ur iphone 3gs 5.1.1 baseband 6.15 and jailbreak using redsnow 0.9.11.b4 and just install cydia and ipad baseband. after that install ultrasnow fixer and ultrasnow. after that u can get your signal back.

  7. Thanks for enabling me to achieve new strategies about pc’s. I also have the belief that certain of the best ways to maintain your notebook computer in primary condition is with a hard plastic case, or maybe shell, that suits over the top of your computer. These types of protective gear usually are model targeted since they are manufactured to fit perfectly above the natural casing. You can buy all of them directly from the owner, or through third party sources if they are for your mobile computer, however its not all laptop can have a shell on the market. All over again, thanks for your points.

  8. maui says:

    i have the same problem i jailbroke my iphone 3gs and download ultrasnow to unlock but still no service.. please help

  9. Ssamri says:

    Pls How to unlock iPhone 4 with bb 4.10.01?

  10. Erik says:

    i have a iphone 4 with ios 5.1.1, is there any way to unlock the phone to any carrier. the phone is already jailbroken with the latest version of redsn0w thats untethered

  11. John says:

    I have a iphone 4 just upgrade to Ver 5.1.1. It’s locked by Fido. after I follow the steps. The unlock is not success.

    and plug to rogers sim card.The phone still display no service.
    What can I do?

    Thanks
    John

  12. a903009 says:

    I’ve said that least 903009 times. SCK was here

  13. blah2 says:

    I adore this blog layout ! How was it made!? Its very nice.

  14. AJ says:

    i used redsn0w it jailbreaked my iPhone 4 AT&T and i used ultrasn0w but after no sim card installed when i quit the airplane mode i get signal bars it keeps searching can anyone help me??

  15. AJ says:

    no signal bars *

  16. I would like to take the ability of thanking you for that professional assistance I have always enjoyed visiting your site. We’re looking forward to the particular commencement of my university research and the general prep would never have been complete without coming to your web blog. If I might be of any help to others, I’d personally be delighted to help by what I have learned from here.

  17. Sonny says:

    Iphone 3gs no service you can fix to re unlock to redsnow 0.9.11b4 just install baseband uncheck cydia just check baseband that all..

  18. Morpheus says:

    Hello, Can I unlock my iPhone 4 bb: 4.12.01 ? thanks a lot!

    • harty says:

      use redsnow by DEV team.. will do

      • Lamar says:

        Can you help a little more with this comment. I have an iPhone 4 with 5.1.1 (9b206) and bb 4.12.01. How can I unlock the phone to use on T-mobile and such? Thanks for your help!

        • L says:

          Hey Lamar, did you have any luck yet? I’m with the same issues… but have 9B208.

          • kakay says:

            i have the same issue too i wanted to unlock my iphone 4 5.1.1 to use here in philippines..if you know the answer how to unlock it plese send me message thanks

  19. Darin says:

    I ran jailbreak, it installed on my iphone but cydia disappeared from it completely. I tried a complete restore, but it sticks on refresh screen and I have to shut the phone off. I rebooted from another date, but it is still jailbroken. I can’t unbreak it. is there somewhere I can just download Cydia to my Iphone. I use Windows on my computer.

  20. AbdelRahman Gaafar says:

    Please help !!
    Dear all i’ve iphone 4 i.o.s 5.1.1 , preserved bb 01.59.00, jailbreak by redsn0w ,, i installed the ultrasn0w 1.2.7 and it is not working, anybody has a solution for this ???

  21. mero says:

    can i use gevey sim on my iphone 4 bas bane 4.01.01 with this jealbroken ios 5.1.1 . any information about that?? does there any way to unlock my iphone withat jealbreak plz any help about that befor i doing updating to my iphone with ios 4.3.3 now???

  22. Mangal Daydreamer says:

    go to redsn0w
    uncheck jailbreak
    click install ipad baseband
    and it will show signal when restarted again

  23. roon says:

    Ultrasn0w is now ultrash1t… the new version 1.2.7 is a fuckn piece of shit and doesnt work at all.. i have 3 3gs’s and one 3g unable to find network.. fuck you devteam.

    • AbdelRahman Gaafar says:

      The problem isn’t in the ultrasn0w the same problem i had with my iphone 4, PROBLEM SOLVED: i downloaded another firmware coz there were 2 versions one works with the locked mobile phones and the other doesn’t ,, for the iphone 4 i used the file 9B206 instead of 9B208, (Both files are for GSM) but as i mentioned b4 PROBLEM SOLVED Thx DEV TEAM :) )))

    • Kevin says:

      The Dev team works so hard to find unlocks and jailbreaks. Not to mention they give it all to you for free. Ungrateful piece of shit

  24. AbdelRahman Gaafar says:

    FOR ALL UNLOCKERS USING GEVEY SIM OR ULTRASN0W :
    The problem isn’t in the ultrasn0w the same problem i had with my iphone 4, PROBLEM SOLVED: i downloaded another firmware coz there were 2 versions one works with the locked mobile phones and the other doesn’t ,, for the iphone 4 i used the file 9B206 instead of 9B208, (Both files are for GSM) but as i mentioned b4 PROBLEM SOLVED Thx DEV TEAM :) )))

  25. Greigblackford says:

    I unlocked a friends phone on ios 5.1.1 b9206 with ultrasnow 1.2.7 worked fine initially but he’s saying now it will work fine for a few hours then drop signal and say searching for an hour…any ideas??

  26. Vinnie from Singapore says:

    Hi

    I think I successfully done the unlocking method however unfortunately my iphone says no service. Please help. by the way my iphone was bought in the USA by my niece as a gift from AT&T..

    Thank you and please accept my appreciation.

    Vinnie

  27. Bobbi says:

    Hi, I have a 3gs 5.1.1 with 6.15bb. Was able to jailbreak -hackivate it without a problem but still unable to unlock for my local carrier. I have installed ultrasnow 1.2.7 and the fixer but NOTHING!! :-( Please help!!! I miss my phone. Need it to work again.

    Thanks.

    • vinod says:

      Download latest version of redsnow 0.9.14b2. Select stock Ipsw from Extras, then go back and hit jailbreak. While jailbreaking tick 1.Install cydia, 2. Downgrade baseband and run it. It worked for me

  28. Monica says:

    I have an iphone 3gs. I followed the instructions and my phone keep searching for service. After a good 5 minutes it stops searching and says no service? What can I do?

  29. Ashley says:

    Hey guys –
    I’m a little confused, it seems some people were able to update and unlock with stock IPSW and others had to create custom? I’m not really sure where to go with this.
    I have a 3GS (2010, week 48 if that matters) on 4.2.1 with BB 6.15. It’s currently jailbroken and unlocked but I’d like to update to 5.0 (or 5.1 if that’s possible at this point).
    Could somebody please tell me exactly what I should be using? I’d really, really appreciate it. Thanks!

  30. Ptaz says:

    Hi Guys,

    If you are having no signal issues, here’s what worked for me.

    Model: IPHONE 3gs new bootrom

    1) flash IOS 5.1.1. official firmware to your device using iTunes.
    2) Use Redsnow 0.9.14.b1 with official IOS 5.1.1 IPSW (select extras then select manually specify IPSW from the redsnow menu)
    3) choose back on the redsnow menu, put your phone into DFU mode jailbreak the device and choose these options: install cydia, upgrade with iPad baseband continue through the warnings.

    4) once the jailbreak is complete, go to cydia install ultrasnow 2.5.7.
    5) respring
    6) go back into cydia then go to search, find mobile substrate and uninstall it. (this will also uninstall ultrasnow)

    7) go back into cyida for the third time and reinstall the mobile substrate package.

    restart

    9 ) go back into cydia for the fourth time and reinstall ultrasnow.

    10) respring

    10) receive signal

    Something is getting corupted during the baseband install which is causing you to have to reinstall the mobile substrate package and then ultasnow is able to unlock the phone.

    hope this helps

    Cheers from Toronto canada..

  31. Stingray says:

    Works like a charm PTAZ. thanks!!!! did exactly what you wrote down and it works!

  32. Mehdi Mohamad says:

    Hello ! I have a Iphone 4 vertion 5.1.1 ( 9B208) MC606KS
    Serjal number is 87126NVPE00 , IMEI 012746006211118
    Its unlock at Sonera Finland .now i need your help to unlock it
    Thanks
    Regards from :Mehdi

  33. G says:

    Everyone with a 3gs with 6.15.00 or who has a baseband unlockable you need to uprade to the 6.15.00 if possible get the newest redsnow fro the blog team and it has a downgrade button to 5.13.xx or whatever it is but it is unlockable then jailbreak etc

    • Joe says:

      I don’t get what your saying. You repeated the BB 6.15.00 . Once for those of us that have it, then you said to upgrade to it???please explain.

  34. Charlie says:

    i have an Iphone 4 it had Version 5.1.1 and firmware 04.12.01. can this be unlocked and used on t-mobile?

  35. Matze says:

    Hy leute hab ein iphone 4 5.1.1 mit der modem-firmware04.12.01
    mit einem t-mobile simlock ,bekomme ich den raus und wenn dann schreibt bitte was ich machen kann….
    DANKE

  36. Kunal says:

    I already have a jailbroken & unlocked (with ultrasn0w) iPhone 4 running iOS 5.0.1. Which technique do I need to use to upgrade to 5.1.1 but preserve my baseband at 1.59.00 and also preserve both my jailbreak and unlock?
    TIA.

    • jlm123hi says:

      You must go to the most recent version of redsnow. Go to extras. Choose custom ispw. Choose the update file. When that’s done plug in your phone and choose pwned DFU mode from the extras menu. MAKE SURE IT IS PWNED DFU MODE NOT NORMAL DFU MODE. Then go into itunes and choose restore. When clicking press the option key. or the shift key if on a pc. Then find your custom ispw file you made with redsnow and select it. ENJOY.

    • jlm123hi says:

      You then can jailbreak with redsnow or absthesin and unlock it with ultrasn0w.

  37. Muriel says:

    Hi, I need a clear answer to my problem.
    I will try to explain it the best i can (english is not my mother tongue).
    After installing the ios 5.1.1 update yesterday, my iPhone stopped working.
    I’ve already jailbreaked it successfully.
    I also used cydia to install ultrasnow and ultrasnow 5.1.1. fixer but i still don’t have any connection with my provider (so I can’t make any calls or send texts)
    I have a Iphone 3gs, firmware 06.15.000

    I would really appreciate any help, because I feel a bit desperate.
    Thanks alot :)

  38. I am not rattling fantastic with English but I line up this really easygoing to understand .

  39. Mony says:

    Will this work with 3GS 5.1.1 , 05.16.05 manufactured 2012?

  40. Artem says:

    Hey,

    Was reading comments, few says it is working, others say it is not.

    So can someone tell me, WHAT IS WORKING?

    I’m using Iphone 4 (AT&T), Baseband 4.11.08, firmware 5.1.1

    Have to unlock it. Thank you!!!

  41. jana says:

    i have iphone 4 version 5.1.1 basband 04.12.01 i have jail break it and it still locked what should i do to unlock it the imei : 01243006755094 …

  42. sanja says:

    how to unlock iphone 4s …with 5.0.1

  43. paris says:

    Seems like it’s a common issue!

    I’ve got an iphone 3GS new booth and I just upgraded it to IOS 5.1.1 with baseband 6.15.00 then jailbreaking with redsn0w 0.9.14b1… still no signal after installing cydia and having Ultrasn0w 1.2.7

    any idea of how I can unlock my phone?

    • paris says:

      do not try redsn0w 0.9.14b2 at all your iphone will be smashed:D I updated again and now my baseband is 05.16.05 please help for unlock…

  44. Dawsonlol says:

    guys, i got an iphone 3gs and just installed IOS 5.1.1 on it
    it was unlocked/jailbreaked before

    but after installing IOS 5.1.1 :

    i cant get pass startign procedure , i bought the phone 2nd hand and i dont know the carrier of it so i cant put the exact sim card and without it, itunes wont let me in.
    whenever i try wifi it writes “your iphone could not be activated because he activation server is temporerily unavailable”

    i would love to unlock and JB my phone but MORE THAN ANYTHING I WOULD LOVE TO EVEN ENTER MY FKIN MENU

    any tipps guys? :\

    • Trev Grant says:

      I have the same problem, but cant get into DFU mode as the power button is also broken. So need to activate without sim and power button!!!
      It’s beaten me.

    • ruthie says:

      we have the same device, baseband and ios, experienced the same, here’s what i’ve done to solve it.

      1. used/open redsnow 0.9.14 beta 2.
      2. click jailbreak
      3. ticked the “downgrade to ipad baseband”

  45. shady says:

    for some reason many people have stated the same issue with no answer I phone 4 ios 5.1.1 firmware 04.12.01, Can it be broken!!

  46. ruthie says:

    device: iphone 3gs
    baseband: 6.15
    ios: 5.1.1

    what i’ve done to unlock:

    1. used/open redsnow 0.9.14 beta 2.
    2. click jailbreak
    3. ticked the “downgrade to ipad baseband”

  47. vivek says:

    Hi,

    I have unlocked my iPhone 4 couple of years ago and using it. Yesterday I have updated my iPhone 4 from Version 4.0.1 to 5.1.1(including baseband). Now its asking for the at&t original SIM to startup the phone.

    Is there a way that I can unlock my phone?

    Thank you

  48. nizar says:

    hello i have iphone 4 baseband 04.10.01
    the version is 4.3.3 (8j2)
    how to unlock it???
    i did jailbreak it….i think ultrasn0w 1.3 will work but how to download it???
    plz help me what to do!

Leave a Reply

Your email address will not be published. Required fields are marked *