Jailbreak iPhone 4.3.5 for iPhone 4 & iPhone 3GS (Windows & Mac)

How to Jailbreak iPhone 4, iPhone 3GS with iOS Version 4.3.5 Using Redsn0w.

Warning: Jailbreak at your own risk. Please exercise caution and read the comments, as these jailbreak instructions are not guaranteed to work.

Note: If you would like to jailbreak any other iPhone version, visit my comprehensive iPhone Jailbreak guide.

This tutorial contains jailbreak instructions for both Windows and Mac users, using Redsn0w. As of August 1, 2011, it is necessary to revert back to the iOS version 4.3.4 when jailbreaking, as explained in this tutorial.

Warning: This is a tethered jailbreak, which means that you will need to redo the jailbreak each time your iPhone reboots (you will not lose your data each time.)

Windows & Mac Users


  1. iPhone 4 or iPhone 3GS
  2. Firmware: 4.3.5 (check your version in Settings » General » About)
  3. iTunes 10.4
  4. Download iOS 4.3.4 IPSW (iPhone 4 (GSM) or iPhone 3GS)
  5. Download Redsn0w 0.9.8b3 (Windows or Mac)

Jailbreak Instructions

1. Open Redsn0w, click Browse and select the iOS 4.3.4 file that you previously downloaded.

2. Click Install Cydia and hit Next.

3. With your iPhone off and the USB cable plugged in, click Next.

4. Follow the on-screen instructions to put your iPhone in DFU mode. Your iPhone will restart and be fully jailbroken.

5. Note: This is a tethered jailbreak, meaning you will have to redo the jailbreak each time that you reboot your iPhone. To do so, simply click the “Just Boot Tethered Right Now” option in Redsn0w.

Was your jailbreak successful? Please post questions and suggestions in the comments.

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Hi I want to jailbrake my phone but my firmwall isn’t 4.3.5 it’s 04.11.08 so what does thy mean?


Hey your firmwall is actually your firmware, which is something different. They mean your version. The version that they are jailbreaking here is the iOS version 4.3.5. It doesn’t mean anything.


I want to jailbreak for my 4.3.5

my phone vision is 4.3.5 3Gs new button i need untethered jailbreak . Please explain how to do this about . Please step by step explain me . thank you verymuch




cant find the ios 4.3.4. file… where would it be and what do i do after the file downloads



hey i installed,after doing the above process there is something which has to be done after just follow this link http://www.youtube.com/watch?v=Rx3K1zETD0E

Rafael martinez

I just updated it 2 5.0 and I can break it so if I follow your instuctions will this work


Works perfectly 😀


cydia becomes to a blank icon….how to fix it?


It DIDN’t Do nothing, screen everything worked
my phone is blocked an i used this program to jail break it
an it didnt WORK!
cant make calls still
took 2 hrs off my time downloading programs and for what?
i cant even get APPs. or use my phone.
Not Impressed


Yeah mine worked but my cydia icon is blank and wont open? any solution?


Yea I’m confused I’ve never done this before , my firmware is 4.10.01 not 4.3.5 is that gonna muff it up ? I can’t afford to ruin my phone


okay so i did this whole process,I even watched a video so i can do it the same. and i did i did everything i was suppose to. and when it got done all my screen shows is the i tunes logo and the usb connecting to it. what am i suppose to do


I tried this twice, the first time a pineapple appeared on y screen but then showed the connect the itunes image. when trying the second time it said downloading jailbreak data and then displayed connect to itunes. how do i get past this?


This happened to mine too. Im trying it again, but with no response from the “power” or “home” buttons I’m worried. If anyone can tell us what’s going wrong, please, this is apparently not a one-hit tragedy.


some program still cann’t be open, n Cydia cann’t open too..


I installed it but cydia seem to net be there its only a blank icon and will not open, how do i fix this?