Unlock iPhone 3G iOS 4 with UltraSn0w 0.93 - iPhoneHeat

Unlock iPhone 3G iOS 4 with UltraSn0w 0.93

Dev-Team has released UltraSn0w 0.93 unlock for iPhone 3G iOS 4. Yes! you can unlock iPhone 3G running iOS 4.0 firmware with UltraSn0w 0.93 unlock. In this guide you’ll learn how to unlock iPhone 3G 05.13.04 baseband.

unlock iPhone 3g ios 4


  • UltraSn0w 0.93 can unlock iOS 4.0, OS 3.1.3, 3.1.2, 3.1, 3.0
  • UltraSn0w 0.93 can unlock: baseband 04.26.08, baseband 05.11.07, baseband 05.12.01 and latest baseband 05.13.04.How to: check your iPhone Baseband
  • iPhone 3GS & iPod Touch 3G owners (especially if you used Spirit for your first JB) should stay away from iOS4 for now
  • Your iPhone must be jailbroken. All jailbreak Guides are linked below

Disclaimer: This guide is for educational and informational purposes only. Use it at your own risk. we cannot be held responsible if anything goes wrong.

Let’s unlock iPhone 3G iOS 4.0 with UltraSn0w 0.93. Please follow the step by step guide below:

Unlock iPhone 3G iOS 4 with UltraSn0w 0.93

T-Mobile USA users please disable 3G network first.

All the steps for unlocking iPhone 3G iOS 4.0 firmware are similar to the guide posted earlier. So please navigate to the guide linked below and follow the same steps to unlock iPhone 3G on iOS 4:

Jailbreak iPhone 3G iOS 4.0

All iPhone 3G iOS 4.0 jailbreak guides are posted here:

Update 1: iPhone 4 Jailbreak is almost ready.

Update 2: iPhone 4 Unlock in works now.

Update 3:

UltraSn0w 1.0-1 is OUT now.
How to: Unlock iPhone 4 iOs 4.0.1 with UltraSn0w 1.0-1

Also checkout:

99 comments… add one
HDL June 22, 2010, 11:14 am

Thanks dude

I just wanna to ask …
I have 3G and I’m wondering that if I have upgraded my iphone 3G to ios4, should I activated ??
if so … how can I activated ? (my iphone is unlocked .. I’m using another SIM card for another carrier so it will not work with iTunes)

iPhoneHeat June 22, 2010, 8:15 pm

The latest RedSn0w 0.9.5 b5-3 can hacktivate 3G at iOS 4.0 so you can then install ultraSn0w from cydia

Tousif June 23, 2010, 5:41 pm

i restored my fully loaded iphone 3G from 3.1.2 to ios 4 and now it asks fr activation , i jailbreaked with reds0w 9.5 also but it didnt work , now if i want to unlock it also i cant open up cydia because the phone is locked . plz help if u can thx

iPhoneHeat June 23, 2010, 10:23 pm

RedSn0w 0.9.5 b5-4 should work fine

don June 24, 2010, 5:13 pm

please link for RedSn0w 0.9.5 b5-4.

vishesh October 7, 2010, 11:02 am

hey mate, i followed the video in youtube to hacktivate my Iphone 3g on iOS 4.0.(using Redsn0w 0.9.5b5-5) Everything went on properly, i got that pineapple screen etc…but after it rebooted i got the same locked (emergency screen) again >.<
plx help
thx in advance

didithu June 22, 2010, 5:21 pm

I’d wonder why not for Iphone Gs?

Kaizoku June 22, 2010, 6:23 pm

When I use it on 3.1.3, it works, but wifi go nuts, cydia hangs when I updated the new packages, never done this before.

iPhoneHeat June 22, 2010, 7:52 pm

go to changes tab in cydia and hit refresh then run the complete update when it asks

Gio June 23, 2010, 12:14 am

Hey guys, i updated to 4.0 everything was ok. BUT!! i have no wi fi since the 3.1.3 update. So i need to do the Ultrasn0w unlock, i used Cyder and now i have the ultrasn0w package in my Cydia, but is says Queue package…i don’t know what to do now! please help me!! 2 days struggling with this and 4 months waiting for this release!!

dedevo November 30, 2010, 10:33 am

did u ever find out what to do?

yathu June 23, 2010, 6:49 am

i have ipfone 3g and i want to update to ios4 but itz not work plz can u tell how to update via redshow step-by-step plz?

iPhoneHeat June 23, 2010, 7:26 am

no jailbreak tool supported yet

Khadeer June 23, 2010, 11:50 am

Thanks yo uso much. You rocked.
I have Jailbroken & Unlocked my iphone 3G iOS4 today :).

Thanks a TONnnnnnnnnnnnnnnnn

ong June 24, 2010, 4:50 am

hi i have update to io4 and then jailbreak by redsnow 0.95 everything look fine but when i install ultrasnow 0.93 it show searching and then after reboot it lock again . i face the same problem when i using iphone 3g 3.1.3 also then y i update it to io4 and hope it work . Can someone pls help…thank

iPhoneHeat June 24, 2010, 10:34 am

reset network settings

logan_jhp June 25, 2010, 6:16 am

hi! I hace a iphone 3g with ios 3.1.3 and you need get out your sim card y put it again, no need reset settings
I did that, my phone is unlock

ong June 26, 2010, 11:43 am

hi i have try all the way that i can find from the internet to unlock my iphone but it still din work…. So can u advice me what is the problem base on ur expert …. pls help

ong June 25, 2010, 6:40 am

hi it not working still lock

iPhoneHeat June 26, 2010, 9:58 pm

go to
settings> general> network
and turn off 3g and data roaming
then roboot
still out of luck?
reinstall ultraSn0w

vince_hope November 17, 2010, 6:25 am

I’ve tried so many efforts but didnt work…unlocked my iphone 3G 16GB iOS 4.1 ultrasnow through cydia but cant working properly and still “no service”….that efforts above already used by me,,but unfortunately cant achice my satisfaction….any advise so fart????

cgyk89 June 24, 2010, 9:32 am

Hi, i have a little question, my iphone 3g have a 05.09 baseband, can i unlock my iphone if i updatee to iOS4????

tnks 🙂

iPhoneHeat June 24, 2010, 10:42 am

Using custom firmware is recommended way..
However iPhone 3G users can also use RedSn0w to jailbreak iPhone 3Gs iOS 4 and the UltraSn0w to unlock it 🙂

zasman June 25, 2010, 12:10 am

I am currently on 3.1.3 on my iphone 3g.
I want to unlock my phone, shall I update it to iOS4 and then unlock it?

iPhoneHeat June 25, 2010, 2:29 am

You can do so because latest baseband 05.13.04 is unlockable now.. however i recommend to go for custom firmware.. create one urself or checkout the iPhone firmwares category 🙂

gilllapi June 25, 2010, 12:33 am

i unlocked my iphone 3g os4 with ultrasnow but after that i am getting no service error sometimes i get the network service and suddeny it gooes away saying no sim installes plz help me

iPhoneHeat June 26, 2010, 9:59 pm

settings> general> network
and turn off 3g and data roaming
then roboot

bgdavid June 26, 2010, 1:47 am

OK guys, I spent 12 hours with no sleep doing the jailbreak and unlock of 3G iPhone because it was upgraded to 3.1.3 before I decided to give to my wife when I bought the new iPhone 4. Here’s the deal – I tried everything, and I mean everything and I read all these posts. In the end I sat here disappointed 12 hours later with no service on T-Mobile USA. And occasionally it said – waiting for activation. BUTTT!!! after all that, 4 hours ago I broke the phone in my attempts and so was forced to upgrade on iTunes to OS4 – gone were my hopes I thought. But no, it carried on looking hopeless even though I followed the redsn0w and cydia ultrasn0w instructions to the letter. And then, quite miraculously even after getting a new sim card, a little message popped up and it said ‘activation complete’ and immediately, and I mean immediately I had full signal and the magic word T-Mobile smiling at me. Redsn0w the beta new version and ultrasn0w .93 DO WORK, but you might have to wait it out with the phone on while the activation takes hold at least here in the US – maybe it is just because of the sheer weight of iPhone purchases in the last 2 days, but I can tell you, it works so Dev-Team and Cydia guy, you are marvelous and we love you!

iPhoneHeat June 26, 2010, 7:45 am

+ make sure you disable 3G first before installing UltraSn0w

ello June 26, 2010, 4:19 pm

i’d updated from fw2.2 to ios4 and successfully jailbreak/unlocked my iphone 3g with redsnow4/ultrasnow. but when i tried it to my sister’s iphone 3g, i’d jailbreak it but when i installed ultrasnow from cydia and reboot it, i am getting no service. i did turn off 3g as the steps saying, could you help me how come its getting no service?

iPhoneHeat June 26, 2010, 10:06 pm

try turning off data roaming as well
plus wifi on off
and reboot.. still out of luck?
reset network settings
or turn data roaming + 3g off and reinstall ultraSn0w
same thing happened to me and i resolved it the above mentioned way 🙂

ello June 27, 2010, 2:39 am

the iphone is already unlocked, its just the simcard was kinda loose…stupid me. anyway, thank you mate, at least you’re willing to help here.

tc0310 July 6, 2010, 3:54 am

how did u fix the loose sim card because i think im having the same problem!

norbert90 July 5, 2010, 5:33 pm

Hey Guys, I’ve just jailbreaked my iphone 3g ios 4 baseband 05.13.04 and I’m currently trying to unlock it as well using ultrasn0w. I launched cydia and added repo666.ultrasn0w.com and installed ultrasn0w however it’s still locked. I reinstalled ultrasn0w many times after disabling 3g and resetting network settings however the problem still persist. Will be thankful for your help!

tania July 9, 2010, 9:53 pm

same problem!!! still locked asking for “enter pin 3 attempts remaining”

tania July 10, 2010, 12:19 am

forget it. it work like magic!. the sim card, it self ,was the problem…

thank you

tc0310 July 6, 2010, 3:51 am

i have a iphone 3g on 4.0 bb 6.4 fw 05.13.04 i jailbroke it with redsn0w .09.5b5-5 and was successful i tried to unlock it with ultrasn0w but had no success i turned off 3g i reseted the network and still it says no sim installed….. with that said i put a friends att sim and it said no sim installed so what do i need to do?

iPhoneHeat July 6, 2010, 12:50 pm

There’s something wrong with the SIM (inserting)..
otherwise it should say >> No Service

uninstall UltraSn0w then insert the SIM and see what it says

tc0310 July 6, 2010, 6:48 pm

i still get the same thing….. but when it was on 3.1.3 it recognize the sim card fine and now that i upgraded im having problems

ong July 6, 2010, 7:15 pm

hi i just wonder why most people are able to unlock their iphone 3g. i have try many way and times but still not sucessful. Is there anyway other ways that i can try to unlock it .

blindeyes July 12, 2010, 1:23 pm

Hi guys,
it’s been 1 week i’m trying to unlock my Iphone 3G OS4 BB 05.13.04 BL 5.09 but still i ‘m stuck at “NO SERVICE”
I’ve been following step by step Iclarified’s tutorial at least 4 times. I’ve started from a stock IOS4 JB with redsnow 5-b5 then installed ultrasn0w 0.93.
My further not successfull attempts were:
– 2nd jailbreak without installing Cydia
– installing ultrasn0w without 3G, data network etc..
– how swap with a different SIM
Unfortunately it seems i’m not getting any good result so far. Also googlin “ultrasn0w 0.93 no service” i came across other users experiencing the same issue.
Guess i might wait for Fuzzyband new version to downgrade the BB with BL 5.9 or other stuff.
Any ideas ?

iPhoneHeat July 13, 2010, 1:15 am

uninstall ultraSn0w..
Turn 3G off
Install ultraSn0w 0.93
turn air plane mode ON/OFF
still not working?
reset network settings
once you get signals, you can turn 3G back on

blindeyes July 13, 2010, 3:00 pm

Nope, it doesn’t work.

It’s a week I’ve been trying all these tricks, with no success.
And every day more and more people are experiencing the same “no service” issue.
There might be something between some SIMs and ultrasn0w 0.93.

iPhoneHeat July 14, 2010, 1:12 am

It worked for majority..

blindeyes July 14, 2010, 1:14 pm

Indeed, i’m rather confused.

I’ve also made the following:
– checked that IMEI wasn’t blacklisted
– I’ve installed a new 3G antenna module

No results so far. Of course..

TomTom_008 September 3, 2010, 12:58 pm

have you fix the no service problem? i need help with my 3g iphone too

Tarique M July 12, 2010, 11:07 pm

I have an iphone 3G OS 3.0, i need your honest opinion should i upgrade it to OS 4.0 or 3.1.3 or leave it as it is coz i need instalous from hackulous and i cannot get it form cyndia it has a 3.1 -4.0 os i did have it before but my YOUTUBE STOPPED WORKING and i reinstaled using JB and unlocked with ultrasn0w , so what should i do, i live in africa and u are my oly hope i cannot go anywhre for help so help!!

iPhoneHeat July 13, 2010, 1:11 am

go for 3.1.3 and then jailbreak with RedSn0w 0.9.3.

Tarique M July 14, 2010, 4:17 pm

I hope its works, but thanks for ur advice

Tarique M July 15, 2010, 6:40 pm

sorry bro just wana ask one more thing, if i jailbeak my iphone 3G OS 3.0 to 3.1.3 as per your advice how will i unlock the iphone for network?

TomTom_008 September 3, 2010, 12:56 pm

did you ever fix the no service problem?

Zeekay July 17, 2010, 11:53 pm

Hi there iphoneheat
i am Installing firmware 4.0 on my iphone 3g (8gb)
I have the latest itunes
USB drivers are updated and working properly
i am using windows 7 but the Problem is whenever i (Shift+Restore) on my itunes and select my firmware 4.0 from my explorer
after this dialogue box
Verifying Iphone restore with apple…..
then after this i get this error message
The Iphone “iphone” could not be restored.An unknown error Occured (3194)
i am getting more stress day by day cuz i have not been meeting with any solution yet 🙁
i hope You can help me.Like you once helped me with my 2g
waiting anxiously for a reply

Zeekay July 18, 2010, 12:03 am

Plus My iphone does not have any firmwares Installed on it now.I switn my phone on and get the apple logo then that Usb and itunes sign

Zeekay July 18, 2010, 12:29 am

after adding this line gs.apple.com in C:\Windows\System32\drivers\etc\hosts
i am now getting an error message by Itunes (1611)
OMG i am really Effed up with this.Hope as always Iphoneheat proves a magic for me

iPhoneHeat July 18, 2010, 2:09 am

don’t do such things.. remove wotever you added.. read my response to your earlier comment

iPhoneHeat July 18, 2010, 2:08 am

Put your iPhone into recovery or DFU and then try

Zeekay July 19, 2010, 2:55 pm

I have successfully installed 3.1.2 but now i cant make it unlock
I jailbreaked it using blacra1n
did according to your procedure
Cydia>installed ultrasnow>Reboot…after that No service :s

iPhoneHeat July 19, 2010, 6:31 pm

go through all the comments

joetinker July 19, 2010, 10:57 am

I have an iPhone 3g running ios4, unlocked with ultrasn0w .93, but having the problem with no service along with everybody else. Have tried uninstalling/reinstalling with 3g off, and basically everything else mentioned. Does it matter when in the process the tmobile sim card is inserted? Have we found a sure fire fix for this problem yet?
Thank you,

Zeekay July 19, 2010, 11:01 pm

Ive checked with the local corner shop mobile unlocker he says that my basebands unlock isnt yet arrived :s
my baseband is 5.13.04

iPhoneHeat July 20, 2010, 11:51 pm

Is it 3G?
if yes then use RedSn0w to jailbreak and UltraSn0w 0.93 to unlock

Zeekay July 21, 2010, 12:55 am

yes its 3g
its already jailbroken but cant unlock it
ive tried several times but it says
No sim or No service :s

iPhoneHeat July 21, 2010, 1:59 am

turn 3G off
turn air plane mode ON/OFF

Cory July 21, 2010, 2:45 pm

I am on ios 4.0.1, the unlock doesn’t seem to work.

Cory July 21, 2010, 3:00 pm

got it

iPhoneHeat July 22, 2010, 5:10 pm

Anything you’d like to share with others on what caused the prob. will be highly appreciated

annoyed July 26, 2010, 5:59 am

Is the ultrasn0w repo down? Everytime I try to download ultrasn0w it fails. I tried with cydia and with rock…

Anyone else having this problem?

iPhoneHeat July 26, 2010, 6:10 pm

use .org in place of .com if it’s down

cleeeem July 27, 2010, 3:34 am

I finally done it, I fixed the No Service 😉 I tryed so many things & this worked for me:

1. Go back to 3.1.2 in iTunes (1050 error is no problem)
2. go to blackra1n.com and “let it rain”
3. install Cydia in blackra1n app
4. ultrasn0w repo in cydia
5. download ultrasn0w
6. reboot & after a minute my Service was back

hope I could help, greetings from Austria

Oyibo August 3, 2010, 3:27 pm

ok i bought an iphone 3gs dat was jailbroken and unlocked already.
1. How do i know which software was used to jailbreak or unlock.
2. I’m on the 3.1.2 Version with 05.11.07 modem firmware, could some1 help me to update to the io4


Paulieshouse August 5, 2010, 8:16 am

I have an iPhone 3Gs and ive run the jailbreak and unlocked with Ultrasnow. Everything works except the MMS. I have checked the setting and there is now switch to allow it. and Ive looked in Cydia for update and they haven’t helped. What can I do to get it working?

lovetohaveiphoneworkingagain August 10, 2010, 7:00 am


I am getting no service error. I cannot find ultrasn0w .93 in cydia, only ultrasn0w 1.0-1 available. baseband 5.12.01, firmware version 3.1.2. Please help

iPhoneHeat August 10, 2010, 11:20 am

install ultrasn0w 1.0-1

Lovetohaveiphoneworkingagain August 12, 2010, 4:58 pm

I installed ultrasn0w 1.0-1, still shows no service. Pls help

Alduxvm September 1, 2010, 2:11 am

Hi! i have a iphone 4, with 4.0.1, i unlocked with ultrasn0w, got service, got 3g, but i got very low signal strength, and when some call me, they cant listen to me, when i call them they dont listen to me, i have to call twice for it to work, what can i do??

iPhoneHeat September 1, 2010, 8:37 am

uninstall and then reinstall ultraSn0w

alduxvm September 1, 2010, 8:46 am

Yes, i already did it, but if i called someone i can hear them but they cant hear me, so, i reinstall again, and it was working great, and then i installed MyWi and the phone reboot, after that reboot the 3g was not working, so i reinstall again ultrasn0w, but i havent been able to recover 3g… 3g not working…

Alduxvm September 4, 2010, 5:39 am

everything works now… but it worked fine for like 2 days, now when i make a phone call the other people dont listen to me… what can i do?

raulkist November 29, 2010, 9:13 pm

Same problem here.
Any news?

drivinmecraze September 10, 2010, 7:44 pm

i havent slept in 2 days as i had to downgrade from 4.1 to 4.0, then i ran redsn0w to jb and ultrasn0w to unlock. i keep getting the no service. i have tried to reinstall..i have uninstalled and reinstall with 3g off..with roaming off..toggled back and forth with the airplane..rebooted and i still have no service. i put the old att sim in but it wont read the simple mobile sim. any comments…suggestions??

Hoby0387 September 16, 2010, 9:46 am

Apple upgraded the modem firmware to 05.14.02. If this is what you have now, which I assume you do since you went to 4.1, the modem FW CANNOT be downgraded just yet. So right now there is no J/B for this baseband. You’re just gonna have to wait like the rest of us for the guys at the Dev Team to come out with a new Jailbreak.

sokolshehu November 1, 2010, 12:56 am

hi. i have iphone 3G . firs i had it jail broken and unlocked with ios 4.0. then i make a mistake, i upgrade it to iOS 4.1 i jailbroke it with snowbreez but then i couldn’t unlock it. Then i downgrade it to ios 4.0 but now i can not unlock it. my Iphone 3G has now modem firmware to 05.14.02. Please someone help me. what can i do or to tell me which is the best firmware and jailbreak and unlock way for my 3G

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