Unlock Your iPhone 3G With UltraSn0w

By , Jun 23, 2009

UltraSn0w, the soft unlock for the iphone 3G 3.0 firmware is now available thanks to the good work of the Dev Team. Don’t wait any minute to install UltraSn0w and unlock your iPhone 3G.

Note that this tutorial was originally written for the 3.0 unlock but the steps are exactly the same to unlock iPhone OS 3.0.1. I simply updated this guide with the latest info.

Before installing UltraSn0w, your iPhone 3G has to be jailbroken and running the latest 3.0 3.0.1 firmware. You can either jailbreak your iPhone 3G using RedSn0w (see tutorial here) or by using PwnageTool (see tutorial here).

After jailbreaking your iPhone 3G, follow these simple steps:

  • Launch Cydia.
  • Add the following source to Cydia repo666.ultrasn0w.com (note there is a “0” in sn0w, not an “o”).
  • After installing this source in Cydia, search for “ultraSn0w”.
  • Install UltraSn0w and reboot your iPhone.
  • Voila!

Note that T-Mobile users should disable 3G before using UltraSn0w.

Unfortunately, the new iPhone 3G S still can’t be unlocked because there is no jailbreak for it yet.

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  • vistauser

    I just unlocked my Japanese Softbank iPhone . im going to vist the US next month and want to know how to or where to get a Sim card that will work with the iphone. I know Tmobile sells sim cards online, can i buy one of thosr? and how do i activate it. Can someone tell me what the procrdure is after unlocking and in my cadr just visiting fof a few weeks. Thanks

  • Jin

    @vistauser, you can stop by any phone stores and ask them to buy a “go plan” which mean you pay for the minutes you use. You can also go in WalMart, Target, Best Buy, etc…to buy those. It pretty cheap actually. Have fun in the US.

  • Seven

    Does this include data as well? Coz as far as I know that all prepaid plans in America doesn’t include data.

  • Vista USER !

    if I go to one of those stores and buy the prepaid SIM Card, how do I activate it, will it give my my phone number automatically… what do I tell the store, “hey I have an unlocked iPhone and I want a prepaid SIM card ? what do I say ? and how do I activate and get the phone number ?

  • http://www.iphonedownloadblog.com/ Sebastien

    I never bought a pay as you go plan in the US but I did several times in France. The guy activated the SIM without having to put it in the phone. So my advice is just ask for a pay as you go plan and don’t hesitate to tell him it’s for the iPhone. He won’t care. All he cares about is making his commission on the sale of the pay as you go plan ;)

  • Vista USER !

    thanks ! Looking forward to using my iPhone in the US this summer without having to pay Softbank’s outragous roaming charges of $1.89 a minute !

  • Doug

    I waited for so long to unlock my iPhone 3g, but for my surprise, after install the official apple 3.0 update, my iphone worked fine, without the need for unlock or jailbreak !!! I’m in Brazil, and here the phones can’t be locked (it is a law),. I think that the 3.0 update got this “law included”. I’m using OI carrier, but the iPhone is officially saled to the carriers TIM, CLARO and VIVO only.

  • Doug

    Ok, iphone was fine, but i could not resist and tried to jailbrake it…. but in the middle of the process redsn0w crashed !! My heart stopped for a while, the harddrive logo stood still in my iphone. Another try and the same… but I tried to run redsn0w as admin and everything works out fine…. So, if anyone had this problem, run as admin. I’m under vista 32bits

  • Vista USER !

    the one thing I liked about redsnow was the fact that I did not have to restore and resync all my stuff… I was surprised when it was done and I saw Cydia.. on there

  • http://www.masteryan.com Master Ryan

    that worked perfectly. couldnt use my iphone as a cell for the last few months lol. thx!

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  • Tzer

    How do you add the following source to Cydia repo666.ultrasn0w.com. I have successfully jailbreak a few times but in my Cydia, under managed and source, repo666.ultrasn)w.com is not there. I need to unlock my phone. Thanks.

  • http://www.iphonedownloadblog.com/ Sebastien

    @Tzer – In Cydia, go to Manage > Sources > Edit > Add and enter the repo address. Then close Cydia and open it again and look for UltraSn0w.
    Sebastien

    • Saurabh

      hi Sebastien, saurabh here form india .

      i recently jailbrock my iphone 3g 3.0 using redsn0w, it work like a knife in the butter but my question is if i unlock my iphone(locked with “Airtel” billing sim card) as given above, and if i restored my iphone later using itunes(using DFU mode), will my iphone get locked again ?

      and i want to use vodafone sim after unlocking ,shall i have to insert vodafone sim while doing unlocking process or after iphone unlocked?

      is it necessary keep the original “Airtel” sim card with me after i restored my iphone which is unlocked

  • Brad

    would i be able to go into a tmobile store and get like an individual plan (not a prepaid) and ask for a data plan as well, then just get one of the free phones and swap the SIM cards?

  • Scott

    I have a 3G iphone that I have installed Cydia on. However, when I launch Cydia, it crashes back to the home screen. Any thoughts?

    • Andy

      Try switching the phone off and then on again before launching Cydia. I had the same problem and that fixed it.

  • shimul

    Great!! i was able to unlock my iphone 3g. But at first it was not detecting network, then i had to manually search for network and voila!!! It worked :)

  • Stv

    Hi,

    I was trying to unlock an iPhone 3G which belongs to my friend. I jailbreaked it using redsn0w, installed both cydia and icy. While trying to unlock through Cydia I was asked to upgrade, I chose essential, I had difficulties here coz when I install ultrasn0w without upgrading it automatically add more stuff and failed at the end so I had to try several time finally I added the repo was able to install ultrasn0w. However after rebooting the phone is blocked. There was networlk for a couple of seconds then no service. In setting it says network is not allowed. I didn’t disable 3G since it was mentioned for t-mobile us customers (I’m in France.)

    I tried several time but still no hope, in fact I’m following your site and dev team for quite long time but still end up with this.

    I would like if u can help me on this. Thanks.

  • http://www.iphonedownloadblog.com/ Sebastien

    Hey Stv,

    Is the SIM card pin locked? I mean, do you have a pin number for your SIM card? If so, remove the pin lock and try again. It should work.

    Sebastien

  • Stv

    Thanks for the quick reply. in fact i have two sims, one pin protected, but the first time i tried with the other one since you warned about that. i did even installed untrasn0w with out the sim but always the same.

  • hbk123

    i unlocked my iphone 3G with redsn0w and inserted the SIM card from my Tracfone, but it still isn’t recognizing service?? do prepaid SIM’s work??

  • http://www.johntdavies.com John Davies

    Just jailbroken and unlocked my 3GS and have it running on UK Vodafone. I used Purpera1n (Mac version) and ultrasn0w, all working fine so far, all very easy and without problems.

    -John-
    @jtdavies

  • ToKo

    Hey,

    is it also possible to unlock the iPhone 3G after updating to OS 3.0 even if I have Boot Loader 6.02? For 2.2.1 users it wasn’t possible to unlock after the Jailbreak if they had the wrong Baseband/Boot Loader – so is it necessary to look for the right Baseband/Boot Loader (after updating to 3.0) to be able to unlock?

    I tried to find it out with Google but I din’t find anything.

    • siiiidddddddd

      hey…yes you can….you can even unlock iphone 3g on ios 4.2.1….just go to jailbreakme. com and it will automatically add cydia to your phone and then you can install ultrasnow….and if it doesnt work..contact me..sbond5010@gmail.com

  • samf

    I fully jailbroke my phone, but when I try to for “repo666.ultrasn0w.com” it says, “Did not find Repository” and has a long messege, what do i do?

    • Andy

      MUST have access to WiFi to add respositories to Cydia.
      So be in a WiFi zone that you have access to (that is, you can load pages in Safari) before adding the repositories in Cydia.

  • etchi

    Hey , ive follwed al instructions on my iPhone 3G 3.0. i get a Searching in the service then no service , i dint know why this is. also iu the carriers in settings their are three services/provided to choose from that are available , shoulkd i choose mine or automatic ? After i choose mine a get a message saying ‘Network Loast , your cellular network is no longer available.’ , please

  • John

    Please help me out, i fully jailbroke my phone, but when I try to for “repo666.ultrasn0w.com” it says, “Did not find Repository” and has a long messege, what do i do? how would i have access to internet without hi fi/networr?

    Please revert.

    • Andy

      You MUST have access to WiFi to add respositories to Cydia.
      So be in a WiFi zone that you have access to (that is, you can load pages in Safari) before adding the repositories in Cydia.

      • mosio

        i have this same problem, i can add other repositories but can’t add repo666.ultrasn0w.com. I have acces to wi-fi

      • ash

        you have to restore once again and install redsn0w and only install Cydia, installing both conflict with each other.

        Let the phone cool down for while before installing repositorie. Hopefully it will work

      • ash

        by both I meant ICY and CYDIA

  • ash

    hiya
    I jailbroke my phone and now I cant see any carrier , I cant even find carrier inside settings., and when I go to cydia even though my wifi is on which i tested on safari, cydia times out.
    what should I do.

  • minh

    to answer your question for Cydia “did not find repository”. That was because the ultrasn0w.com website was down temporarily. With a little bit of patience you should open a browser, enter repo666.ultrasn0w.com and check to see if it is up again. Then at that moment, go to your Cydia, add source, and it should work

  • Pkroan

    OK. so for all having trouble adding repo666.ultrasn0w.com, i had the same problem. this is aggravating but restore your os through itunes, AFTER THIS YOUR IPHONE IS NO LONGER JAILBROKEN.. do the process again all the way to cydia and when it asks you to ugrade, do complete upgrade not the other option. now go to sources and add repo…… it will work.

    On a different note i am having trouble with my unlocked iphone 2g with a 3.0 OS, i installed ultrasn0w through cydia and now when i enter my sim and my pin lock code it says searching and then no service. i have T-Mobile and think it has something to do with my network settings.. i have no clue. i have spent hours searching decided i would post on a blog asking for help. thank you.

    • Stan

      Didnt work for me:( i have googled all night and i still have “no network” on my jailbreaked (redsn0w) iphone 3G 3.0.
      is the repo666 website down?
      please help me anyone, i really need network on my iphone:P

      THNX upfront! :D

  • Aizi

    I have a 3g iphone and it’s already jailbeoken and unlocked using YellowSn0w but i have the 2.2FW so what are the steps i should follow? Should i just connect my phone to the PC and just update with itunes and lose my previous jailbreak and unlock and start from scratch like i bought the iphone with a 3.0FW? Or should i do something else?

  • Pkroan

    I would just use the 3.0 os.. Then jailbreak through redsn0w and unlock with ultrasn0w. If you have a 3g should work fine. I had rouble adding the source though, when you run Cydia and it prompts for a upgrade do the complete upgrade and make sure you have wifi. Then go to manage sources and add repo666.ultrasn0w.com

  • Dave

    Same situation here. I have a 3g running on 2.2 jailbroken and unlocked with us tmobile sim. Thinking if i shud upgrade to 3.0 using itunes then jailbreak it with resn0w and unlock with ultrasn0w. I didnt try it yet just had a few questions. Do i leave my tmobile sim during the update and/or jailbreak?

  • saurabh

    i recently jailbrock my iphone 3g 3.0 using redsn0w, it work like a knife in the butter but my question is if i unlock my iphone(locked with “Airtel” billing sim card) as given above, and if i restored my iphone later using itunes(using DFU mode), will my iphone get locked again ?

    and i want to use vodafone sim after unlocking ,shall i have to insert vodafone sim while doing unlocking process or after iphone unlocked?

    is it necessary keep the original “Airtel” sim card with me after i restored my iphone which is unlocked

  • J3r3my

    My thanks to all the people who have put this amazing effort in – any advice on how to get past first step? I’ve run redsn0w for Mac 0.7.2. When I BROWSE for the 3.0.1 IPSW redsn0w does not recognise any of the files in the iPhone1,2_3.0.1_7A400_Restore.IPSW folder as being IPSW files. The folder in fact contain nil files with an IPSW filename extension. Any theories – operator error (read tutorial), corrupt download? (done twice) Gotta simple eh?

    • Lane

      If you unzip the restore image it won’t work! All you do is download the iPhone1,2_3.0.1_7A400_Restore.zip and RENAME the .zip to .ipsw. Windows will ask are you sure? Say Yes. The icon will change to a little cube and you then point RedSn0w to it. People are clicking the .zip to “extract” it. DON’T DO THAT! ;-)

      Faslane

  • Burepe

    I did all the steps and I think it worked but I don’t have another sim card to test right now. Is there a way to tell if ultrasn0w is working properly even though you don’t have another sim card? Should I just assume that it is fine because it installed and my phone is fine?

    Thanks a lot!

  • Davina

    Hi,

    I have jailbroken my ‘phone and now have followed the instructions to unlock it, how do I know it has worked? I am going abroad next week what is the cheapest way to use my iphone 3G to make calls and also to surf the net.

    This is a great site.

    Thanks.

  • Karen

    upgraded 3G to 3.1 – then downgraded it to 3.0.1. Jailbroke it with Redsnow… then attempted to Unlock with Ultrasn0w… but it still isn’t working. Help please. Tmobile user.

  • Sam

    I did follow the unlock procedure until I get the Cydia, when I try the repo666.ultrasn0w.com. I have the following error messages.
    1- repo66.ultrasn0w.com sub-process bzip 2 returned an error code (2)
    2- GPG error repo66.ultrasn0w.com Release: the following signature were invalide NP Data 1 no data 2.
    3- error database: encountered a section with no package: header

    Then I lose all the sources that already installed.
    Please note that I’m sure am typing the right repo666.ultrasn0w.com…. Maybe in one of old trails I did enter by mistake 66 instead of 666. I don’t recall. However, I did the whole process more than 10 times and still having this repo66.ultrasn0w message all the time.

    I’m not an expert, I may be doing something wrong, and therefore I’m seeking your advice please?

  • Jon

    ” Karen said:

    upgraded 3G to 3.1 – then downgraded it to 3.0.1. Jailbroke it with Redsnow… then attempted to Unlock with Ultrasn0w… but it still isn’t working. Help please. Tmobile user.”

    Karen I did exactly the same thing and have exactly the same problem. Have been googling the whole say but cannot find a solution. Every time I try installing UltraSnow I get this:

    “http://www.ispaziorepo.com netDB: Open nodename nor servname provided, or not known”.

    Can anyone please help.

  • Khan

    Hi,Is there anyway to unlock throgh unlock my iphone without being in wifi zone.

  • craig

    I’ve used the Dev team’s Pwnage tool to jailbreak my iPhone 3G and then Cydia’s UltraSn0w to unlock it, but when I put my T-Mobile SIM card in it just searches endlessly and finally says No Servie. What am I missing or doing wrong?

  • Stan

    “craig”

    just google “blackra1n” and jailbreak your iphone with that, easy as he**.
    no problem to activate or unlock for all carriers:D

    PS! i have firmware 3.1.2 (iPhone 3G)

  • craig

    thanks I will try that.

  • johpat

    hi guys.. i had this iphone problem..since last week, my friend hand me a iphone without sim card.then i tried to jailbreak and unlock even without sim card on it still it says NO SERVICE and yesterday i borrowed a friends iphone sim but i still got NO SERVICE or searching.. currently firmware is 3.1.3.

    i already jailbroke and unlocked many iphones but this one really bugged me.

  • AG

    So… I did the jailbraking with blackra1n and when I tryed to unlock with blacksn0w the screen of my iphone started only to show the apple image.
    Help please!!What should I do???
    Thanks

  • Indika Rajapaksha

    Hi,

    I jail broke my iphone 3g with 3.1.3 and I manage to do jail break it, but when I open cydia to unlock the phone it says ERROR:Database, Encountered a section with no package: header. Please help me to bet back my phone to normal. Is it possible to downgrade it to 3.1.2 ?

    Please help.

    Indika.

  • MK

    I’m new to the I Phone. I bought an unlocked 3G last week. Got it up and running perfectly with T-Mobile. I conncected to I-Tunes to download some music and got a message that an update was available. Ignorant me ran the update to the newest 4.0 firmware and now I’m locked out of my great new phone. Can I get it unlocked again?

  • Anonymous

    @MK

    You’re in luck, it just so happens an unlock for iOS4 was just released.

    You’ll have to jailbreak your phone by following instructions given here: http://wikee.iphwn.org/howto:rsbeta

    Install the program “Cyder” (find both it an instructions on it’s use via a quick google search), and load the utility “ultrasn0w” (also easily located via google).

    After installing ultrasn0w and rebooting, your phone should once again be unlocked, and operating in iOS4.

  • Robert Medina

    thanks =)

  • nabs

    i have jail broken the phone and also installed ultrasn0w but still no network

  • kranti