A few hours back, Apple released iOS 4.3.5 for iPhone, iPad and iPodtouch. We mentioned that devices susceptible to the Limera1n bootrom exploit will be able to be jailbroken on iOS 4.3.5. Following is the guide on how to jailbreak iOS 4.3.5 on iPhone, iPad and iPod touch using redsn0w.

Prominent member of the iPhone Dev Team, MuscleNerd has also confirmed that it is indeed possible to jailbreak iOS 4.3.5. It is going to be a tethered jailbreak, meaning that whenever it is required for you to reboot  your device, it has to been connected to the computer for a tethered boot. Otherwise, it will just get stuck on the Apple logo and won’t boot up until and unless you boot tethered using a computer and the very same redsn0w software you used to jailbreak it. So the files that you download for the jailbreak are to be kept safe as those very same files, the iOS 4.3.5 ipsw and redsn0w for your Windows or Mac machine, will also be used to boot tethered. Keep in mind that this procedure does not work on the iPad 2.

A word of advice for our friends who rely on a software unlock for their iPhones. You must not, we repeat, must not upgrade to iOS 4.3.5 or even iOS 4.3.4 for that matter. Your baseband will be upgraded and you shall not be able to use cellular services on iOS 4.3.5. Stay away from stock firmware.

Jailbreak iOS 4.3.5 Tethered on iPhone, iPad and iPod touch:

Step 1: Download both iOS 4.3.4 and iOS 4.3.5 ipsw for your iDevice. You will need the iOS 4.3.4 ipsw.

Step 2: Download the latest public version of iTunes, followed by downloading the recently released redsn0w 0.9.8 beta 4 for both Windows and Mac.

Step 3: Extract the redsn0w folder. Launch redsn0w on your computer. If you are running Windows 7 or Vista, make sure to do the following procedure before you run redsn0w.

  • Right click on redsn0w.exe and click on Properties
  • Go to the Compatibility tab
  • Check Run this program in compatibility mode for and select Windows XP Service Pack 3 from the drop down menu
  • Check Run this program as an administrator down in the Privilege Level.
  • Click Apply followed by Ok
Step 4: Once redsn0w loads up. Browse for the iOS 4.3.4 ipsw that you previously downloaded. Yes, to jailbreak iOS 4.3.5, you need to point redsn0w to iOS 4.3.4 ipsw.
Step 5: Redsn0w now begins to identify the ipsw. Once done, it takes you to a screen where you have several boxes to check. First and foremost, check Install Cydia. You may also choose to enable Battery Percentage and Multitasking Gestures.
Step 6: Upon clicking next, redsn0w now instructs you to power off your device and connect it to the computer. From here when you click next, it will show instructions on how to put your device in DFU mode. Follow these instructions carefully:
  • Press and hold the Power button for around three seconds
  • Press and hold both the Power and Home buttons for up to 10 seconds
  • Release Power button but keep on holding Home button until redsn0w starts injecting the Limera1n bootrom exploit.
Step 7: Once the device is in DFU mode, leave it up to redsn0w to work its magic. Sit back and watch redsn0w jailbreak iOS 4.3.5 on your iPhone, iPad and iPod touch.
Boot iOS 4.3.5 tethered after jailbreak:
Step 1: So once you have successfully done the jailbreak, you need to boot your freshly jailbroken device tethered. Connect it to your computer and power it off.
Step 2: Launch redsn0w once again and select the iOS 4.3.4 ipsw.
Step 3: Uncheck Install Cydia and any other options you may have previously checked. Now only check Just boot tethered right now.
Step 4: Follow the above mentioned instructions to put your device in DFU mode.
Step 5: If the instructions have been followed as they are meant to be, you’ll see redsn0w starts to work on its on again. At this moment, your device shall be displaying a pineapple in place of the Apple logo that appears at start up. Within 2 minutes, your device will be fully booted, tethered on jailbroken iOS 4.3.5.
Downloads:
Download iOS 4.3.5 for iPhone, iPad and iPod touch
Download iOS 4.3.4 for iPhone, iPad and iPod touch
Download redsn0w 0.9.8b4 for Windows and Mac
Download iTunes 10.4 for Windows and Mac

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