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Sandip Dedhia

Sandip Dedhia

Sandip Dedhia is the founder of, he loves to write on technology, gadgets & web services. At Blogsdna you can read his Windows tutorials, free and useful software related articles. He is on twitter too @sandipnd View author profile

  • Geo M

    check on the current edition of Cydia and could only find ultrasn0w .92 wonder when the new version would be updated…

  • mel

    wow that wass easy

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  • jaime

    do you have a 3gs? did u update to 4.0 the unlock?

  • Tommy

    When i downloaded the ultrasnow unlock, it kept saying size mismatch and did not install correctly. what do i do ? i really want to use my iphone again

  • Sushrut

    Hi.. I bought my iphone 3gs last year from ebay.. I was told it wasn’t jailbroken (which of course was not true). I used it in South Africa, it worked fine. Took it back to India, it worked fine with an Airtel sim.. I think i might have updated the software in india(i really dont remember)..

    But then once back to SA, it did now work on a S African sim, it just goes to a weird mode, can see a connecting chord and itunes symbol and emergency calling mode (basically network locked)..
    I tried to restore the initial software using itunes(BIIGGG mistake). Now it does not recognize any network or sim, back to the weird mode..

    PLEASE HELP!!! I am not understanding the technicality of this damn phone!!!!

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  • max

    my 3gs 3.1.3 5.12.01 jailbrack by sprite and now with Ultrasn0w 0.93 complete unlocking Big thanks

  • deepak

    i have a 3GS on 3.1.3 with 5.12.01 and latest BL. I jailbreaked with spirit and also unloacked with ultrasn0w successfully . Can i upgrade to OS 4.0 directly from itunes. Please advise. will i have to again unlock and/or jailbreak? please help

  • Guyzer

    If you have done all the above and still have problems with your network (Like I did) take your sim card out and put it back in, stupid I know but worked for me!

    Good luck!

  • Rick

    Hey does this work with iphone 3gs bootrom 5.13.04 and version 4.0 cause redsnow is only for 3g

  • Ram

    Fantastic.. It worked like charm with 3GS on 3.1.3 / 05.12.01 jailbroken with Spirit. Thanks for the individuals providing this hacking.

  • Nikita

    WOW!!! Really BIG thanks to those people who made this ultrasn0w! I just finally unlocked my iPhone 3.1.3 05.12.01!!! THANKS!!!

  • giorgionnelo

    yes i have same thing “iphone 3gs bootrom 5.13.04 and version 4.0” it’s a new bootrom. will this unlock my iphone?? i don’t want to mess it up. thanks

  • Ritesh

    I have just bought phone last week and i have update i tune from online and my phone got locked up. my phone is i phone 3gs version 4.0 currently. with t mobile service. please some one can help me to get back unlock my phone..

  • sheryl

    have done updating my os to 4.0 & its working but my phone got locked;( was trying the repo666 but i guess they blocked this in UAE since i was not able to add it sucessfully..any alternatives plss….tnx

  • toy sompong

    I have 3GS unlocked running 3.1.3(5.12.01) with tmobile. The screen is messed up right now so I want to restore but it will update to os4. Will I be able to uplock it again if I take the update? Thanks for any help.

  • manoj

    hello blogs dna team,i updated my iphone 3g from 3.1.2 to 4.0 and jailbreaked it following the above steps.but now my iphone doesnt detect wifi signal at all.hence,im not able to unlock it and use it with my airtel sim.i bought my iphone in the US which is by default programmed to work with AT&T sim.kindly help me….i dont have a spare phone too…thanx for taking ur time to read this.


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  • Naga

    A Real big thanks to dev team. I could unlock the IPHONE with these simple steps. I thought i have to spend atleast Rs500 to rs1000 for unlocking but with easy steps i could do so.

    For people who still facing the problem 3gs (7e18) 5.12.01

    Please download to jailbreak your phone.
    Download spiritjb to your desktop
    connect your iphone to the system.
    run the spiritjb application.

    Wait till the process completes.
    Now Cydia is installed.

    open cydia. will ask to upgrade packages choose complete packages.

    go to Manage section
    3. Now click on sources and click on edit to add following repo (it’s ‘0(zero)’ and not ‘o’)
    4. Now search for Ultrasn0w 0.93 and click on install
    It will do the rest. Insert the other carrier sim and you can see the left top right the name of provider. its cool ryt!!!

    For people who’s WIFI is gone. Don’t get panicky. :-)

    Just Goto Settings–>General–>Reset–>Reset All Settings(If you have entered any code it will ask please enter the code)

    your WIFI will be back.

  • Vince

    I have 3gs 3.1.3 with baseband 5.12.01. I used Spirit to Jailbreak it and Ultrasn0w .93 to unlock it. After rebooting,It got stuck in recovery mode. Won’t Boot up. what can i do ..Thanks for your help

  • george thoman

    Hey cell phone experts, I am planning to buy 3gs iphone with iOS4.0 firmware. I would like to know if this iphone is unlockable and jail broken. I am hearing all these wired stories that we won’t be able to unlock 4.0 firmware on 3gs…….. I need help from you “cellphone experts”.. Is the unlock software avilable to buy as of today?? Please let me know.. my emial is I would really appriciate ur help..
    thanks again for u time…

  • ayya

    how to jailbreak my iphone 3gs,,i have install 4.0

  • vivek

    hey i have iphone 3gs 4.0 want to unlock it
    it has become a mess for me.,., i did not understand any of this thing unlocking part
    now thinkin that unpadting the phone has been a biggest mistake up of.
    i just want to know is it possible to unlock.,.,
    please please help me

  • Mannan

    man i jailbroke my iphone 3GS on old bootroom with sn0wbreeze and unlocked it through cydia with ultrasn0w and its working perfectly fine on an international sim! THANKSSSSSSS to everyone involved in this! IM SOOOO HAPPYYYYY!

  • Varun

    i have iphone 3gs unlocked. my ihone version is onlu 3.0 and i want to knw the process for upgrading it for free…is dere any way to upgrade using cydia

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  • mohammad

    3gs 4.0. need unlock. 2phone how much.

  • Pingback: How to unlock iPhone 3G or 3GS on iOS 4.0 | The Connect Post!()

  • Parikshit

    Wow ….My 3G OS 3.1.3 , 5.12.01 is unlocked

  • Ebo

    The dam unlock has not been released yet
    What the he’ll are you doing here

  • kiran

    3gs 4.0 unlock release or not……………

  • jamen55

    I have an iphone 3gs OS4.0 firmware 5.13.04, can i jailbreak and unlock it? if someone can help me, please, thanks a lot, this is my mail:

  • Bassam

    I have an iphone 3GS with the new 4.0.2 os….
    i go tit jailbreaked by jailbreakme 2.0… so i hav cydia in it… and than i went ahead and got the new ultrasnow to unlock it for me… which it did… and now i am not able to send or receive any calls or sms… any clues ?

  • kamal

    I have an iphone 3gs with 4.0.2 firmware and 5.13.04 baseband version. Kindly help me in unlocking and jail breaking.

  • Gushekso

    I have an iphone 3gs with 4.0.2 firmware and 5.13.04 baseband version. Kindly help me in unlocking and jail breaking.

  • Nina


    I am bringing my iphone 3gs unlocked from canada, it is on version 4.0. I am wondering if it will work on the airtel network in delhi. Also, to get a prepaid data plan on it would i just purchase a sim card and add the money on to it then.

    Thanks for all your help.

  • SA

    it is awesome. Thank you

  • chocolate_swirlz2

    if my iphone is unlocked with version 3.1.2, can i still use this procedure to re unlock it to 4.0 os version? i hate the 3.1.2 version and want to make it 4.0



  • Anonymous

    I found a blog where to download all the firmware from Apple for free, there are also many tutorials to solve many problems of the jailbreak and unlock.


  • Smithgrame43

    Yes ofcourse You can jailbreak it & unlock it from here

  • Grame Smith190