Jailbreak iPhone 4 / 3GS iOS 4.3.1 Untethered with RedSn0w 0.9.6 RC9 [How-to Guide]

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These are the steps to jailbreak iPhone 4, iPhone 3GS on iOS 4.3.1 untethered using RedSn0w 0.9.6rc9. RedSn0w 0.9.6 can jailbreak iOS 4.3.1 on iPhone 4, 3GS, iPod Touch 4G, 3G and iPad. Step-by-step jailbreak instructions after the jump…

Important

If you depend on UltraSn0w unlock, STAY AWAY from iOS 4.3.1 and RedSn0w.
UltraSn0w unlockers go for the PwnageTool/Sn0wbreeze Custom firmware (Guides linked at bottom).
iPhone 4 users can update to iOS 4.3.1 while preserving baseband with TinyUmbrella. Here is how to:
Your iPhone 4, iPhone 3GS must be running iOS 4.3.1

Disclaimer: This guide is for educational and information purposes only. Follow the steps below at your own risk. We cannot be held responsible if anything goes wrong.

Let’s untethered jailbreak iPhone 3GS and iPhone 4 iOS 4.3.1 with RedSn0w 0.9.6.

How to Jailbreak iPhone 4, 3GS iOS 4.3.1 untethered with RedSn0w 0.9.6rc

Step 1

Download the required stuff:

Step 2

Restore iOS 4.3.1 on your iPhone 4/iPhone 3GS and keep it connect to your computer via USB.
*You can skip this step if you’re already running iOS 4.3.1/tethered jailbroken iOS 4.3.1.

Step 3

Execute the Redsn0w 0.9.6 rc9 (Download link below)

Step 4

Hit the Browse button and select official iOS 4.3.1 firmware (downloaded in Step 1). RedSn0w will recognize your IPSW file. Then hit Next.

Step 5

Now check mark “Install Cydia” and hit Next.

Step 6

Now make sure your iPhone 4, iPhone 3GS is turned OFF and Plugged in to your computer. Hit Next.

Step 7

Now you’ll be instructed to put your iDevice into DFU Mode. Follow the on screen instructions.

Once you’ve successfully entered into DFU mode, RedSn0w will start jailbreaking iPhone 4 or iPhone 3GS on iOS 4.3.1 untethered. When done! your iPhone 4, iPhone 3GS will be jailbroken untethered on iOS 4.3.1.

If you depend on UltraSn0w unlock or want to use custom firmware created via PwnageTool/Sn0wbreeze, follow the guides linked below:

Jailbreak iOS 4.3.1

Jailbreak iOS 4.3.1 [All Guides]
Jailbreak iPhone 4 / 3GS iOS 4.3.1 Untethered with RedSn0w 0.9.6 RC9 [Untethered]
Jailbreak iPod Touch 4G / 3G iOS 4.3.1 Untethered Using RedSn0w 0.9.6 RC9 [Untethered]
Jailbreak iPad iOS 4.3.1 Untethered Using RedSn0w 0.9.6 RC9 [Untethered]
How to Jailbreak iOS 4.3.1 with PwnageTool 4.3 [Untethered]
How to Jailbreak iPhone 4.3.1 Using Sn0wBreeze 2.5 [Untethered]

Unlock iOS 4.3.1

Unlock iOS 4.3.1 with UltraSn0w 1.2.1

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Tags: guide, iOS 4.3.1, iPhone 3GS, iPhone 4, Jailbreak, RedSn0w 0.9.6, Untethered

Comments:

jhon 4 April 2011 at 2:14 pm #

hello do i need to do the step 2 if i am already running under iOS 4.3.1 ? ( normal not tethered) ?

Reply
- iPhoneHeat 4 April 2011 at 4:11 pm #
  
  no need to.. however a fresh restore is recommended
  
  Reply
  - jhon 4 April 2011 at 7:06 pm #
    
    ok thank you i ll try .
    
    Reply
  - jhon 4 April 2011 at 7:13 pm #
    
    i have just tried to restore my iphone 4 from iPhone3,1_4.3.1_8G4_Restore.ipsw but something goes wrong because itunes pup up and say error 1015 what do i need to do?
    
    Reply
    - jhon 4 April 2011 at 7:13 pm #
      
      no sorry error 1013
      
      Reply
    - jhon 4 April 2011 at 7:31 pm #
      
      it is okey i ve juste restored it form my mac and it worked fine no error it was just winshit the shit…
      
      Reply
    - rrrrrrrrrrrrrrr 5 May 2011 at 3:04 am #
      
      hey on mine the internet wont work and cydia app is blank and it wont start up
      
      Reply
alanzaki073 4 April 2011 at 4:21 pm #

Works Great!!
Thank u guys..
My Device
iPhone 3GS
ios 4.3.1
bb 6.15.00
unlock- ultrasnow 1.2(working)
so far no probs or glitches

Reply
- almak 5 April 2011 at 2:14 am #
  
  Is yours untethered and unlock?(3gs bb 6.15). If yes how did u proceed?
  
  Reply
  - Alanzaki073 6 April 2011 at 3:12 pm #
    
    I used snowbreeze to cook custom firmware and then ibooty to boot it and then as redsnow was released just followed redsnow on this state of the device and it’s working..
    Just give it a try
    
    Reply
- HSA 5 April 2011 at 11:35 am #
  
  Hello,
  
  does this solves the problem of GPS on 4.2.1?
  
  Reply
play 4 April 2011 at 5:41 pm #

hia just done a update from 3.2.2 to 4.3.1 on ipad then run RedSn0w and all is good upto the uploading ramdisk where it just hangs. any help please

Reply
georges 4 April 2011 at 6:08 pm #

Why I should Download ios 4.3 in step 1 if i will not use it in the process or can this be applicable for 4.3 untethered for i phone 3gs thx

Reply
- iPhoneHeat 4 April 2011 at 7:10 pm #
  
  for those still running older FW
  
  Reply
  - vodanhz 5 April 2011 at 7:12 am #
    
    just to confirm, can this also jb 4.3 aswell?
    
    Reply
    - iPhoneHeat 5 April 2011 at 11:46 pm #
      
      No official word on 4.3
      
      Reply
waha999 4 April 2011 at 6:57 pm #

thanks …..i did it…..for my iphone 4….

Reply
makullet 4 April 2011 at 7:00 pm #

i get stuck in the “uploading ramdisk” part and afterwards the iphone just rebooted without a jailbreak installed. what do i do? thank you

Reply
- iPhoneHeat 4 April 2011 at 7:08 pm #
  
  retry
  
  Reply
  - makullet 4 April 2011 at 7:20 pm #
    
    thank you..
    
    Reply
Number1Bassman 4 April 2011 at 7:45 pm #

Just backing up now and then going to try!
Thanks Dev Team and everyone involved in getting our devices jailbroken and free!!!!

Reply
naterkit 4 April 2011 at 8:32 pm #

I am still getting stuck with uploading ramdisk

Reply
- iPhoneHeat 4 April 2011 at 11:28 pm #
  
  retry
  
  Reply
JamestheMan 5 April 2011 at 2:33 am #

Also getting stuck at the uploading ramdisc section.

Reply
- almak 6 April 2011 at 6:30 am #
  
  this website will help you. I had the same problem and it worked fine for me try both of the solutions in that website: http://www.iphone4jailbreak.org/forum/redsn0w-stuck-at-uploading-ramdisk-iphone-4-4-2-1.html
  
  Reply
  - Rockstar 14 April 2011 at 10:19 pm #
    
    Mr Almak.
    thanks loaaaaddddddsssss….. u cant even guess how happy was my face after seeing cydia on my phone… u rock dude… only cos of ur link it helped me a a lot… thanks a tonnnnsssss….. love u loadddssss
    
    Reply
Sam 5 April 2011 at 3:02 am #

Ultra snow not unlocking 6.15 baseband 3GS help iphoneheat

Reply
- iPhoneHeat 5 April 2011 at 3:55 am #
  
  wait for the UltraSn0w fix.. Dev-Team is working on it!
  
  Reply
  - Sam 5 April 2011 at 4:14 am #
    
    how long will it take:(
    
    Reply
Azures 5 April 2011 at 3:03 am #

Thank You Dev Team for the awesome work. I just had one question.. Is there a way to make a backup of other iDevices in iTunes before the jailbreak that are usually not synced to my own system? Basically I’m trying to Jailbreak friends iDevices for them, without loosing all the apps/contacts/settings.

Reply
vodanhz 5 April 2011 at 4:33 pm #

i get this error:

AppName: redsn0w.exe AppVer: 0.0.0.0 ModName: ntdll.dll
ModVer: 5.1.2600.5755 Offset: 00010a19

redsn0w crashed. while “downloading jailbreak Data…”

anyone get it too?

Reply
- vodanhz 6 April 2011 at 4:33 am #
  
  fixed it by running it on a MacBook
  
  on WinXP SP3 run it 3times crashes when it starting to download RAM…
  
  Reply
noname 5 April 2011 at 7:17 pm #

I keep getting dam error and cant update to 4.3.1, why!?
Sry if my speling is bad.

Reply
alex 5 April 2011 at 8:27 pm #

Hi

step 4 browse where for the ISO FW
Pls help

Reply
ALEX 5 April 2011 at 9:30 pm #

hi
cydia is not runnin properly after JB
any 1 know y?

Reply
- Steve 14 April 2011 at 9:03 am #
  
  I’m having the same problem. There is white rounded app square with Cydia underneath it, but it fails to launch. I have a week 25 iPhone 3GS.
  
  Reply
gsquad 5 April 2011 at 11:32 pm #

After downloading the 4.3.1 ispw file it shows up zipped.. I cannot get redsnow to recognize it. What do i DO?

Reply
- iPhoneHeat 5 April 2011 at 11:55 pm #
  
  use Firefox or chrome browser to download it.
  
  Reply
- vodanhz 6 April 2011 at 4:39 am #
  
  rename the file change from .zip to ipsw
  
  if you do not see the zip extension at the end.
  
  in the file folder, click on “Tools” – “Folder Options” – “View”
  
  in there unselect “Hide extensions for known file type”
  
  click OK
  
  simply rename it to .ipsw
  
  Reply
manne 6 April 2011 at 3:32 am #

Ich habe ein 3G mit BB 6.15 kann ich die 4.3.1 drauf spielen oder geht das nicht ?? Danke schon mal im vorraus

Reply
Clueless 6 April 2011 at 12:00 pm #

Successfully jailbroken my Ipad. However, my cellular networks got “Restricted”! I couldn’t gain access to the internet. Please advise asap! Thanks.

Reply
Razornine 6 April 2011 at 2:16 pm #

GREAT WORKS!!! Thanks!
Perfect work with my ipad 1..

Reply
draco809 6 April 2011 at 3:59 pm #

Guys, how to I update to 4.3.1 if i’m on the ipad baseband? Thanks in advance.

Reply
- iPhoneHeat 6 April 2011 at 4:46 pm #
  
  use custom iOS 4.3.1
  
  Reply
  - draco809 7 April 2011 at 6:56 am #
    
    How? Thanks in advance.
    
    Reply
    - iPhoneHeat 7 April 2011 at 9:09 pm #
      
      http://www.iphoneheat.com/2011/04/how-to-jailbreak-ios-4-3-1-with-pwnagetool-4-3-untethered/
      or
      http://www.iphoneheat.com/2011/04/how-to-jailbreak-iphone-4-3-1-using-sn0wbreeze-2-5-untethered/
      
      Reply
      - draco809 8 April 2011 at 5:26 pm #
        
        So if i use the custom firmware, can i use ultrasn0w to unlock it?
SaifRubbani 6 April 2011 at 7:38 pm #

When my iPod 4G began to download the jailbreak data, redsnow crashed on my computer, and my iPods been stuck on that same screen for 10 minutes now. Is that normal?

Reply
gry 6 April 2011 at 9:46 pm #

tnx so much!

Reply
punk 6 April 2011 at 11:46 pm #

cheerz!

Reply
Redmucus 7 April 2011 at 5:39 am #

Guys, i’m a newbie on iphone.
I got my iOS 4.3.1 updated through iTune already on my iPhone 4. should I still follow “step 4″ or just directly click on “next”??

Reply
- iPhoneHeat 7 April 2011 at 9:08 pm #
  
  you can’t hit next without providing IPSW
  
  Reply
draco809 8 April 2011 at 7:11 pm #

So if i update to 4.3.1 using custom firmware from pwnagetool, will ultrasn0w work? I’m on the ipad baseband.

Reply
damien 9 April 2011 at 11:00 pm #

I already Jailbroken my iPod, my question is, since this is an untethered JB, what will I do when I accidentally turn off my ipod? DO i just run the REdSn0w app? Thanks !

Reply
manne 10 April 2011 at 3:43 am #

Hi I just wanted to ask again: I have a Iphone 3g with BB 6.15 and the soft.4.02 it, I can make 4.2 Direct on it or should I first use 4.1.
Thanks

Reply
dan 10 April 2011 at 4:17 am #

hi. i have an ipod touch 4g and i wanted to jailbreak it on 4.3.2 firmwarel. but everytime i download the .ipsw file it becomes a .zip.. any suggestions on what im doin wrong?

Reply
- dan 10 April 2011 at 4:18 am #
  
  sorry.. i meant 4.3.1
  
  Reply
- damien 10 April 2011 at 7:22 am #
  
  download and install the latest version of iTunes before downloading the .ipsw file
  
  Reply
  - dan 10 April 2011 at 3:48 pm #
    
    yes i have. ive been running itunes on 10,2,1,1
    
    Reply
ran1717 11 April 2011 at 2:54 am #

my uac is grey and i cant press it …i cant make the cpu on 1..what should i do??

Reply
Ck 13 April 2011 at 4:00 am #

Hi, i have jailbreak my iphone 3gs firmware 4.3.1 using redsn0w. But after awhile my iphone couldnt search my cellular network. It just show ‘NO SERVICE’. Anyone know of any solution?? Pls help. Thanks!

Reply
mandeep 13 April 2011 at 5:19 pm #

its not working errrrrrrrrrrrrrr

Reply
ddsmith2483 16 April 2011 at 10:44 pm #

I have an iphone 3gs with 4.3.1 on it. i’m trying to download the RedSnow jailbreak and everytime i go through the process it freezes up on “Uploading Ramdisk”. Ive tried a few times and it always gets stuck there. HELP….

Reply
- Pharo 17 April 2011 at 7:22 pm #
  
  Try the solution posted by almak above. It should work……
  
  Reply
whitestar 23 April 2011 at 11:43 am #

Please help. I have the ipod touch 3rd gen on iOS 3.1.3 and it says here that I have to update to 4.3.1 iOS. Whenever I restore and browse, itunes tell me that the firmware I chose isn’t compatible with the ipod. Help? :/

Reply
speedybarrett 3 May 2011 at 12:46 pm #

Keeps getting stuck on a screen that says “Exploiting with Limerain”. What do I do?

Reply
dylan 9 July 2011 at 1:19 am #

i cant find a download link for RedSn0w 0.9.6 rc12 can someone help me

Reply
TareQ 16 July 2011 at 5:37 pm #

I am stuck with black screen.

My iPhone is 3Gs, Installed Firmware (4.3), Serial Number (87017WA23NR), Installed Baseband (05.16.01-6.4_M3S2)

I tried to jailbreak my iPhone with iPad baseband, but everytime i finish the restore process, i get error 1015 undet iTunes. I tried to use iBooty to reboot my devices but with no luck (black screen is all what i get).

Reply
boat parts 1 August 2011 at 5:40 pm #

I have iphone 4 factory unlocked on firmware 4.3.4, trying to downgrade it to 4.3.3,but i am facing 1013 error.To remove that error i edit host file and change the server address but still its not working, what i am making mistake tell me.

Reply
Asylejmani 21 August 2011 at 6:38 pm #

Hi Guys,

I have a iphone 4 (4.3.5) jail-broken with RedSn0w but every time I turn off the phone, I have to connect it to my computer in order to turn it on. (Boot untethered). If I do a restore, it says Connect to iTunes and can make emergency calls only. Is it possible to restore the original firmware and just activate the phone without original or phonebook sim card. What I’m looking for is a jailbreak solution that doesn’t make me connect my iPhone to the computer every time I restart it or turn it off. Any ideas??

Reply
lucara 30 August 2012 at 1:11 am #

hey i open the redsnow i put ios 4.3.1 for iphone 3gs the make an erros and the redsnow close can you anser me please
thnx

Reply
ROLANDO LEIVA 13 December 2012 at 10:33 pm #

ESTOY CORRIENDO EL REDSN0W 0.9.6B5 PERO ME PRESENTA ESTE ERROR Y YA NO PUEDE HACER NADA.

AppName: redsn0w 0.9.6b5.exe AppVer: 0.0.0.0 ModName: msvcrt.dll
ModVer: 7.0.2600.5512 Offset: 00037010

NECESITO QUE ALGUIEN ME AYUDE A SOLUCIONARLO.

este otro mensaje me sale cuando doy salir de error anterior.

ERROR DE APLICACION

LA INSTRUCCION “0X7C92240B” HACE REFERENCIA A LA MEMORIA EN “0xf9ae5146″. la memoria no se puede “written”

q

Reply
aizee 16 December 2012 at 6:56 am #

how long will this take? thanks:)

Reply

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