How to jailbreak & unlock iPhone 3G running iOS 4.0

by Abhishek on June 22, 2010 ·

Filed in: Announcements,Cydia,Launches,Tips/Tricks,Troubleshooting

Post Updated: Dev-Team has updated RedSn0w  to fix an issue with iBooks. We’ve updated the redsn0w links.

Devteam released redsn0w 0.9.5 beta r3 which jailbreaks iPhone 3G and iPod Touch 2G. Since this redsn0w is still in beta stage so you’ve to update cydia, once your iDevice is jailbreaked.  We’ve successfully jailbreaked and unlocked iPhone 3G running iOS 4.0. Multitasking, Homescreen wallpaper and battery percentage working smoothly on iPhone 3G.

Here are the steps to jailbreak iPhone 3G:

  1. Install iTunes to 9.2 or you can download it from here.
  2. Download redsn0w 0.9.5 beta r3 for mac from here or if you are using Windows then download it from here.
  3. Download the iPhone 3G iOS from here.
  4. Now put the phone in DFU mode:  Switch off the phone then by holding the home button plug the data cable, keep holding the home button until you see the iTunes and datcable icon on your iPhone screen. (Detailed Instructions here)
  5. Once your phone comes to DFU mode, iTunes will detect your iPhone 3G and will ask for you to restore, By pressing the Shift key Click on Restore button. After that locate the downloaded firmware file that you’ve downloaded from step3.
  6. Let iTunes update your iPhone 3G, Once done you will see ‘Emergency call only’ on your iPhone 3G screen.
  7. Now Extract the redsn0w file that you’ve downloaded from step 2.
  8. Launch rednsn0w.exe and locate the ipsw file that you’ve downloaded from step 3.
  9. After that click on next, then you will see below window:

10. Don’t uncheck anything just click next and follow the on screen instructions.
11. Once done wait for your device to reboot.
12. Now launch cydia and update it, after that add this repo on cydia ‘repo666.ultrasn0w.com’ . (the ’0′ in snow is a ‘zero’ and not the letter ’0′
13. Install ultrasn0w and reboot your iPhone. You are done.. Enjoy

Update: If you are facing issues while updating cydia then you should follow the steps mentioned here.



You can subscribe to us via RSS or EMAIL

{ 142 comments… read them below or add one }

Gus June 25, 2010 at 7:24 am

iPhone 3G 3.1.3 redsn0w jailbroken, ultrasn0w 0.93 unlocked. Eveything is great. I don’t want to upgrade to iOS. I still have iTunes 9.1 on my computer (Apple). Is it safe to update the iTunes to 9.2 now? Will I have to jailbrake and unlock it again?

michael June 25, 2010 at 11:32 am

I have a 3g iphone and i am doing everything it says to jailbreak the 4.o firmware but when i do it through redsnow it says that it is done but my phone is just at a black screen, it does not do anything else, any way to fix this?

Jason June 25, 2010 at 11:48 am

NO WALLPAPER???

I used pwnage and ultrasnow to jailbreak and unlock my iphone 3g (previously jailbroken and unlocked with blackra1n and running 3.1.2) with 5.11.07 baseband. The jailbreak and unlock worked, and I have all features, except for wallpaper. I have wallpaper on the lock screen, but not behind my apps.

Anybody else have this problem? If so, did you fix it and how? Thanks,

P.S. I had some paid apps through Cydia. When I re-download them through Cydia, will it automatically remember that I paid for them, like the App Store does?

Jason June 25, 2010 at 12:05 pm

RE: NO WALLPAPER???

As I was. I did some research and found out that the iPhone 3G does not support custom backgrounds. iOS4 for iPhone 3G still restricts the user to a black background. No problem, I’ll just use Winterboard.

billym June 26, 2010 at 5:03 am

just jailbreaked ma 3g multi tasking, background and contacts fine only thing is ive lost all my tunes, how do i get these back???????????

Jason June 26, 2010 at 10:30 am

Billym,

All your data would be gone when doing an iPhone Restore…

I used pwnage to jailbreak and unlock my iPhone 3G, which doesn’t add any features that the iPhone 3G wouldn’t normally support (i.e. wallpaper and multitasking). I’m gonna try using redsn0w now, but I might break my iPhone by using one hack after another. If so, oh well.

Brian June 26, 2010 at 7:51 pm

OK….I upgraded to os 4.0 on my iphone 3g, then jailbroke using red snow, unlocked with ultra snow, and I cannot get my Edge network to work on my phone! There is no celluar data option to put an APN, just an on or off switch. I’m pretty sure I’ve tried everything but if ANYONE could offer ANY help, that would be great! I’ve restored several tiems, even as a new phone, tried unlockit.nz, did not work.

Tim June 27, 2010 at 8:34 am

hey it worked great the jailbreak and unlock just curious i cannot remove any repo i click on the edit tab and there is no way to remove them? also i always recieved my voicemail directly to my voice mail tab they would automaticly download to my phone so i never had to call and check it . if you have any ideas please help me out thanxs

sandy June 27, 2010 at 5:35 pm

Hi i have done this procedure on my iphone 3g os 4.0 and everything went right except for the cydia white icon. Can anyone tell me how to get it back to normal.

Thanks in advance

Confused... June 28, 2010 at 8:03 pm

Hey guys quick question. I’ve unlocked my phone several times personally. But my brother used to use AT&T so he’s never unlocked his. Now he’s switching to Tmobile on the 3G and I tried following the steps above except iTunes doesn’t recognize the 3G .ispw I downloaded from this website. I was curious if I could just download the iOs4 from iTunes directly and then jailbreak from there or is this a customized .ispw? (I checked the iTunes version to the version I downloaded and both have the same name except the iTunes version has about 100,000 mb more. Appreciate any help you can give. Thanks in advance.

Confused... June 28, 2010 at 8:16 pm

Quick update:
So far I’ve checked and iTunes claims the .ipsw I downloaded is a firmware which is not compatible? Redsnow on the other hand does not recognize the .ipsw I downloaded from iTunes but it does recognize the .ipsw I downloaded from this website. So now I’m stuck on whether I should try to update via the Apples default .ipsw and then try to unlock redsnow? But then I’d be using different .ipsw’s (apples to turn software into iOS4 and this websites version for Redsnow to unlock). Anyone know if this’ll work?

Caleb June 29, 2010 at 2:25 am

I had Wifi Prior to Jailbreaking and now my iphone does not detect any wifi signals. I currently updated the firmware to iOS 4 and did the jailbreak. Iphone is a 3g model.
Need some help troubleshooting.. THanks

Desperate June 30, 2010 at 1:18 pm

Hi, I followed the steps outlined here to upgrade my iPhone 3G software to iOS4 and thenn tried to unlock with the red snow beta now my iphone keeps getting to the downloading jailbreak data phase and then the red snow on my computer crashes. Windows claims the program stopped working. N.B. I did try running the red snow in administrator mode but to no effect. Now my phone is stuck on the emergency call screen every time I restart. Can anyone please help? I would really appreciate it.

Prashant June 30, 2010 at 1:48 pm

Hi guys,

following are the specs of my iphone 3GS

Base band 05.13.04
Bootloader 6.4
Model M B717
Firmware 4.0

How do I jail break and run on the vodaphone network in India.

Geert June 30, 2010 at 2:07 pm

@Prashant: I would not have upgraded to iOS 4.0 yet with a 3GS yet, I succeeded with a 3G but failed with a 3GS.

jose varghese July 1, 2010 at 5:07 pm

I tried to download the iphone 3g ios I am getting it as a zip file not an ipsw file , is it the correct format , can i update my iphone with this file or is this file only for mac or somthing like that

trmf July 3, 2010 at 6:42 am

okay i did every thing and the phone is working but not the service on it and i don’t know how to add this repo on cydia ‘repo666.ultrasn0w.com’ if someone can help me with that thanks

siva July 4, 2010 at 12:58 pm

http://sites.google.com/a/iphone-dev.com/files/home/redsn0w_win_0.9.5b5-4.zip?attredirects=0

Link not working pls.!

siva July 4, 2010 at 1:13 pm

Thanks, i got it from here…!

http://www.mediafire.com/?zmwytgoujzw

Martin July 4, 2010 at 8:47 pm

Hello!

I have problems with the update. Firstly, I have problems while restoring in the normal way in iTunes. The restoring process stops halfway (the progress bar at the iPod). At the same time, my computer goes nuts since iTunes freezes and so on. Therefore, I tried using redsn0w.

redsn0w_win_0.9.5b5-5

Everything goes according to the plan. The stage with “Downloading jailbreak data” completes (I guess), but then there’s suddenly an all white screen. Why, why, why?

I so badly want to fix my iPod. Maybe it is bricked or something, I don’t know. It’s been non-usable since last summer. Thanks!

Ben July 5, 2010 at 2:51 pm

TRMF go to Cydia and let it update then search fro ultrasn0w install it and your done

Martin July 5, 2010 at 3:50 pm

Problem is:

I can’t get into the iPod. All black in DFU mode. Every recovery fails halfway. Can’t get into Cydia or something.

Brandie July 7, 2010 at 5:56 am

Hi all! I have used the jailbreak and unlock and it works GREAT!! I have a 3G. My problem is that everything works, except my cellular network. I am with Telus and cannot seem to find the correct info that I need to add to change my settings. WiFi works great! Does anyone know the setting for Telus? Please advise. Thank you!

Yogi July 7, 2010 at 8:00 pm

Hi Anyone

My question right now i m out of country and i am using iphone 3g 3.1.2(jailbreak & unlock) but now i wanted to upgrade to OS 4.0 but the thing is that i dont hav my official sim card with me here is it poss to jailbreak and unlcok without using the original sim card which i had at time of purchase . So i tried number of websites but i am confused please guide me as i wanted to use redsnow for jailbreaking OS 4.0 but if i use activated custom ipse 4.0 it doesnt recognize if i use normal ipsw or original ipsw it recognise but i am afraid after that it will ask for the original sim card for activation .
So let me know any one has any idea or advice on this pls mail me yaar yogiefxmagic@gmail.com

Adrian July 12, 2010 at 10:03 pm

Hi, I’ve just got an unlock iphone 3G loaded with 4.0 firmware. Downloaded itunes and how do I go about to jailbreak it? I’ve also tried to locate the ipsw file but couldn’t find it. Can any one help me? Thank you.

Ayman July 13, 2010 at 9:47 pm

Hey guys

can someone tell me what do I need to do with my iphone 3G after the firmware 4.0 update it does not understand the DFU mode. I keep trying hold both buttons power/home and it worked before I am sure since I use to unlock it each release. Please help on this matter

Ayman

Drew July 14, 2010 at 3:42 am

I am lost on steps #4 and #5. I downloaded the ipsw file.

First, recovery mode has the cable/iTunes image on the screen, but the instructions state to put it into DFU mode.

Second, clicking on the shift+restore (mac) and that does not do anything. iTunes still wants to d/l from Apple server.

If I can get past those two issues I think everything will be good.

kdash July 14, 2010 at 8:03 am

hi. all i have some problems after using redsnow to jail break my iPhone 3G MB model with IOS 4.0 .. i found that wireless have some bugs.. at home i able to connect and online and at my work place can connect wifi BUT not able to online.. Not tat as well, Youtube also cant be use after jailbreak. need to use Push Fix to fix it..

Everyone, Do your iPhone 3G will be more lagging / Slow respond while enable @ install with Multitasling ???

Deonardd July 15, 2010 at 2:21 am

Hi Guys
FYI the ipsw Firmware you downloaded is not truly a zip file … Remane from .ZIP to .IPSW
I just jailbroke my iPhone 3g running on the 4.0 firmware with redsn0w 9.5 and unlock it for t-mobile, and it works fine

Ayman July 15, 2010 at 11:12 am

thanks everyone, my son figured out what was the issues. It is not the phone it is with windows 7 and iphone driver some how it is blocked by windows 7.

MJ July 16, 2010 at 6:12 pm

I have a 3G Iphone with firmware 3.1.3 (7E18), baseband 15.12.01. I used Spirit to jailbreak, I got the Cydia icon on my phone, then installed ultrasn0w. I put my Orange sim card in it and it worked fine and I was able to make and receive calls. After I turned it off and on, it is now saying “waiting for activation”. It still says Orange in the top left, but no signal bars.

I reintalled ultrasn0w many times it still doesnt work.
I removed ultrasn0w and switched it back on again, that doesnt work either.

Can anyone help please?

tmac July 18, 2010 at 2:23 am

When I try to restore from itunes while my phone is in DFU mode I get the “…could not be restore because the firmware file is not compatible.” I downloaded the one you provided.

Rino July 18, 2010 at 11:50 am

I have an iphone 3G 3.1.3, which i jailbroken & unlocked. But by mistake it has locked again, while i upgrade to ios4.0.1 through iTunes. Now what i have to do to unlock and use my SIM in UAE.
Please help me.
Thanks,
Rino

UAPotato00 July 31, 2010 at 2:14 am

i actually having issues for my 3G 4.0.1 baseband 05.13.04. restored my phone to stock 4.0.1 inserted at&t sim card and works fine. as soon as i use redsnow 095b5-5 to jailbreak phone does not read any sim cards. tried to unlock with ultrasnow, nothing worked. any ideas?

Oro August 7, 2010 at 11:24 am

Reinstall Ultrasn0w if your unlock makes Cydia icon go white. Worked for me.

keyur August 13, 2010 at 3:24 am

Thanks a lot..work like a chram! but i’m not able to get battery % thing! :(

Ben August 13, 2010 at 3:37 am

HAVE TO TURN ON BATTERY % IN THE PHONE SETTINGS

keyur August 13, 2010 at 7:53 pm

Thanks :) got the battery %

Jork15 September 23, 2010 at 8:10 am

Thanks, it works!

Cosmic November 3, 2010 at 1:09 pm

redsnow link for windows is not working

chalky November 9, 2010 at 2:29 am

can i jailbreak my 3g version 4.1 modem firmware 05.14.02 thanks

simppa99 December 18, 2010 at 11:43 am

Hi. I have an iPhone 3GS running on 4.2.1 and when i try to update cydia sources it gets stuck on ‘Downloading Packages’. Any help please?