How To: Unlock the iPhone 3G/3GS/4 on iOS 4
June 24, 2010 in Featured, How To's, iPhone 3G How To's, iPhone 3GS How To's, iPhone 4 How To's, iPhone How To's, Video
I. Before You Begin
1. This will work on the iPhone 3G, iPhone 3GS, and iPhone 4 on iOS 4 (aka iPhone OS 4).
2. This will work on all basebands up to 5.13.04 (check your baseband by going to Settings > General > About and looking for Modem Firmware).
3. In order to unlock the iPhone, you must have jailbroken your iPhone. If you have not, then please do one of our procedure to jailbreak your iPhone model:
How To: Jailbreak iPhone 3G
How To: Jailbreak iPhone 3GS (Coming ASAP)
How To: Jailbreak iPhone 4 (Coming ASAP)
II. Unlock the iPhone
1. If you jailbroke your iPhone, you have an app called Cydia on your phone. Click on it.
2. If this is your first time opening Cydia, allow it to update itself and choose Graphical Only when asked. It may reboot a few times.
3. Once it is done updating and setting up, click the Manage tab at the bottom.
4. Select the Sources button.
5. Click Edit at the top right, then click Add at the top left.
6. Enter http://repo666.ultrasn0w.com for the source url (KEEP IN MIND THE 0 is a “zero” not an “oh”). Then click ok.
7. Click Return to Cydia button then click Done.
8. Select the Repo666.UltraSn0w.com under User Entered Source.
9. Select UltraSn0w the app
10. Then click Install at the top right of the screen and then Confirm in the same place.
11. Once installed press Reboot, and the phone will reboot.
12. Now goto Settings > General > Network and turn OFF 3G (if you are using T-Mobile USA) and ON Data Roaming.
13. Pop in the SIM you want to use and viola! Enjoy!
Reported Issues:
Issue: Says searching forever after I finished this procedure and won’t recognize the new SIM.
Solution: Simply goto Settings > General >Reset > Reset Network Settings (do NOT click reset ANYTHING ELSE besides Network Settings). Phone will reboot and find the network.
Mike said on September 10, 2010
Unlockr….I tried the jail break on my gfs phone worked fine…now i have one and tried it and it did the process cydia is on the home screen but the artwork for it isnt there and it wont do anything i cant even add the repository for repo666 and best off my phone wont shut off it acts like it does and just resets on its own….bye the way its on 4.1
David Cogen said on September 10, 2010
Mike,
There is no jailbreak for 4.1 yet… you have to wait till it comes out.
Mike said on September 10, 2010
Ok unlockr…i was finaly able to downgrade to 4.0….but now with cydia it give me a netdb: error and ultrasn0w doesnt do anything even though it says its complete….any ideas….
Mike said on September 11, 2010
Unlockr
Im stuck on the searching for network forever….ive reset network multiple times and still nothing 3G is off and all that good stuff…i dont know what else to do…..
Mike said on September 11, 2010
well got it figured out….after accidently upgrading to 4.1 it changed my baseband to 5.14.02 which ultrasn0w cannot currently unlock so will have to wait for Dev to come out with an update and right now if ur bootloader or whatever it is, is over 5.08 you can not use fuzzyband to downgrade ur baseband….pretty wack i know….just got iphone 3G white 16GB and cant even use the thing…..i will be paitently waiting for something to happen…and hope it comes quick because my gf is tryin to gt me to sell my phone and that is not gonna happen….sorry for all the post Unlockr
djzz said on September 18, 2010
((((( me to upgrade to 4.1 ,,,, wait for new version now is imposible to unlock
Anthony Rothwell said on September 22, 2010
Hello i have a 3gs 3g 32gb and its jailbroken and unlocked on firmwere 4.0 and im curently using Cincinnati Bell and the phone works fine its just that im trying to send MMS and it wont let me at all and i have the proper settings i believe so can i get some help on what to do thanks….please email me at anthonyrothwell@yahoo.com THANKS ALOT
David Cogen said on September 22, 2010
Anthony Rothwell,
What firmware is is on? The iPhone never had the ability to send MMS until a certain firmware (it was pretty late in getting it).
Otherwise, search our site for Internet/MMS Settings in the search box at the top of the site and we have a page with a collection of settings.
Chris said on September 24, 2010
Just curious on if and when will you guys be posting some new jailbreaking software for the 4.1 software that apple released for the iPhone. I tried to jailbreak my phone not realizing that the update wouldn’t let me jailbreak it so now I’m stuck with my 3g iPhone with now 4.1 update and a base firmware of 5.14.23. I just want to say thanks as well because I love the site, it’s helped me out a lot in the past few months.
Mike said on September 24, 2010
If you go to sinfuliphone.com and search the forum for Fuzzband (5.14.02) in the search and bring up the thread you will find aze2learn has a method to use fuzzyband 4.0 to downgrade BB 5.14.02 but you HAVE TO HAVE BOOTLOADER 5.08 or it wont work…you are just simply using ifunbox to place the 5.14.02.cert file into the fuzzyband application to accept BB 5.14.02 after a few trys you will succeed in downgrading your baseband if your lucky it will work first try…BUT YOU MUST HAVE BOOTLOADER 5.08 and fuzzyband will tell you if u have that Bootloader…..the .cert file is located in the thread for you to download….all credit to aze2learn…..just read his post in the thread easy to follow instructions
Erika said on September 26, 2010
Hey what if i pressed devolper and it didnt even ask for an update and now it says unable to load timed out
Chris said on September 27, 2010
Thanks Mike for the info, I’ll try it out and let you know how it goes, But will this help me in unlocking or jailbreaking my phone? Curious…. Thanks again.
Patrick MC said on October 5, 2010
Hi,
when my I-phone is unlocked and running on T-mobile, will I be able to access and download apps from the app store?
David Cogen said on October 5, 2010
Yes but you won’t get 3G speed. Only 2G
Pmcglynn72 said on January 19, 2011
Thanks a-lot. I did unlock it, but after a day or two using it, I hated it. I went out and bought a Mytouch 4G that blows the pants off of the Iphone 3g or 3Gs, I never used an Iphone 4 but after watching about 25 IPhone 4 VS. Mytouch4G videos on youtube and the MT4G beats the Iphone 4 every time, Not to mention wifi calling, and flash 10 out of the box.
Joe Black said on October 20, 2010
So check this out I buy and Iphone 16GB on ebay jail break it and unlock it thinking I can use it for T-mobile and I am the tool that finds out it is uses a smaller sim card. I guess the joke is on ME! Screw AT&T!
David Cogen said on October 21, 2010
Google MicroSIM cutter
Or search or site for How To Convert a SIM into a MicroSIM.
Joe Black said on October 21, 2010
Thanks Unlockr! I figured I should google the smaller sim cards and I read an article about how they were the same sim just without the plastic around it so I took a box cutter to mine and got it to work.
Joe Black said on October 21, 2010
But then of course like a moron I realize the person that had it before me already updated it to 4.1 so I didn’t unlock it just jail broke it.. So I have been trying to downgrade back to 4.0.1 with no avail so far. I am using a MacBook and downloaded the firmware and changed the hosts file in the etc folder with the included line I found on some youtube videos to (Trick Itunes) into thinking its talking with apple but I keep getting the (This device isn’t eligible for the requested build) error message. Any thoughts? Or am I SOL until a better unlock comes out for 4.1?
ms frustrated said on October 29, 2010
Hello Unlockr.. badly needed your expert help. im from Philippines and my dad sent me an iphone 4 from US..
version: 4.1 (8b117)
modem firmware: 02.10.04
can you unlock this? im really really frustrated now.. will treat your lunch for your help… pls.. thnx in advance. will be waiting for your reply..
Anonymous said on November 12, 2010
Please help I have iphone 4 with 4.0.2 baseband 01.59.00.
used limera1n to jailbreak and Ultrasn0w 1.0-1 to unlock
I’ve tried it several times but it’s not working. I keep losing the carrier after about 5-10 minutes, I can make calls in this 5-10 minute period but after I lose unlock and the phone shows a single bar,without carrier. (tmobile)
I have to reboot he phone to use another 5-10 minutes than same story.
MY unlock is not permanent, it keeps going away, any idea how to fix this?
Should I upgrade to 4.1 with using tiny umbrella in order to keep the baseband 01.59.00. and try to unlock and jailbreak again?
Hart Marco said on November 17, 2010
Hello unlocker,
I have modem firmware 05.14.02 and i have tried your procedure and i cannot get my phone to unlock. I am using a telus sim card if that makes a difference. Can you help me?
Kpitts said on November 17, 2010
I have an iphone 3g i unlocled with ultra snow and i have done this process with 3.1.2, 4.0, 4.0.1, 4.0.2 and all of them still say searching at the top. I cant seem to get out of it. I am a t-mobile user what should i do. I am on 4.1 now and it still wont work.
Pretty_insaine29 said on November 18, 2010
i accidentally updated my 3gs on v4.1. can it be unlocked again?thank u
Pretty_insaine29 said on November 18, 2010
i accidentally updated my 3gs on v4.1. can it be unlocked again?thank u
Bjenrette said on January 10, 2011
Hi…I have the 3g and went thru the steps to jailbreak my phone. Now I cannot make calls. The phone icon is missing and cannot make calls from my contact list…any ideas??
Bjenrette said on January 10, 2011
Hi…I have the 3g and went thru the steps to jailbreak my phone. Now I cannot make calls. The phone icon is missing and cannot make calls from my contact list…any ideas??
Sismos99 said on February 22, 2011
I tried to update my 3g phone thinking it was unlocked but it was not. Now it is blocked telling me that i have the wrong sim card. What should I do. Thanks in advance.
nicole said on February 26, 2011
I have Cincinnati Bell and it still says Searching. Why is that?
Matt said on March 19, 2011
Hey I just jail broke and unlocked my iPhone 3GS. Version 4.1 and Modem Firmware 05.14.02. But I can’t get past the problem of my phone constantly saying “searching…” instead of T-Mobile. I have taken your steps of resetting the network settings, but still does not fix the “searching…” problem. Please let me know if you have a solution for me! Thanks.
Juane1107 said on April 8, 2011
this will work on 4.3 right?
Sdn10rocks said on October 7, 2011
i bought iPhone 4 in India in March Version 4.0.2, Model MC605B, firmware 01.59.00
why i cant upgrade my iOS? in India & in UK… everybody said i cant.. why?