Jailbreak iOS 4.3.5/4.2.10 Using Redsn0w on iPhone 4, 3GS, iPad and iPod Touch
*UPDATE 8/31/11* For those of you with 4.2.10, you can now do a Tethered jailbreak for 4.2.10 with Redsn0w 0.9.8b7a
Earlier today Apple released and update for iPhone 4, iPhone 3GS, iPad and iPod Touch users - iOS 4.3.5/4.2.10. No concrete information about this update has been provided, other than it seems to fix an issue with certificate validation, as pointed out on Apple’s change log:
A security issue has been resolved with certificate verification.
The latest version of Redsn0w has been confirmed to jailbreak the just released iOS 4.3.5/4.2.10 on iPhone 4, 3GS, iPad 1, and iPod Touch 4G/3G. But it will be limited to tethered boot, which means you will have to reconnect your device to your computer every time you reboot your iOS device. iPad 2 is obviously not supported. This has also been confirmed by MuscleNerd of iPhone Dev Team:
@zaone @m1ckey29 ah ok thanks for checking! So those who really do want tethered 4.3.5 can use redsn0w pointed at 4.3.4 (except iPad2)
How to Jailbreak iOS 4.3.5/4.2.10 (Tethered)
Step 1: Download iOS 4.3.5/4.2.10(only if you aren't already on these firmwares) and iOS 4.3.4 (required by this version of Redsn0w) firmware file for your device.
Download iOS 4.3.5/4.2.10 for iPhone 4, 3GS, iPod touch and iPad
Download iOS 4.3.4/4.2.9 for iPhone 4, 3GS, iPad, iPod touch
Download Redsn0w 0.9.8b7b for Windows
Download Redsn0w 0.9.8b7b for Mac
Download iTunes 10.4 for Windows & Mac
Step 2: Download Redsn0w 0.9.8b4 for Windows or Mac. Also make sure you are running the latest version of iTunes, which is version 10.4.
Step 3: Now start Redsn0w, browse for the iOS 4.3.4/4.2.9 firmware file (NOT the 4.3.5/4.2.10) that you downloaded in Step 1. Refer to the screenshots below:
Step 4: Once Redsn0w is done recognizing the firmware file, click Next and there you’ll be taken to a new window. Simply check the “Install Cydia” box as shown below and leave other options as it is for now. Once done, click Next.
Step 5: On this screen, Redsn0w will instruct you to power down your device and plug it in to your computer. Follow the onscreen instructions and then click Next to continue.
Step 6: On this screen you will have to put your device in DFU mode with a combination of the Power button and the Home button for a certain amount of time, simply follow the onscreen instructions on how to do so. The combination is usually like this:
- Hold down Power button for 5 seconds.
- Now without releasing the Power button, hold down the Home button simultaneously with the Power button for 10 seconds.
- Let go of the Power button but keep on holding the Home button for another 15 seconds.
If you performed the above mentioned steps correctly, then your device should be in DFU mode.
Step 7: Redsn0w will now jailbreak your device, don’t do anything weird at this point, just let Redsn0w finish. We would recommend that you don’t do anything with your PC or Mac at all during the process. Sitting idle and waiting for the process to end on its own is much advised.
Since this is a tethered jailbreak, whenever your iOS device reboots Cydia will crash immediately when you press it. You will have to repeat the “Just boot tethered right now” step EVERY time you reboot to prevent this. Go back to step 3 and on step 4 only check the box that says "just boot tethered now" and nothing else and then click next.
That’s it! You should now have a jailbroken iPhone, iPad, or iPod touch running iOS 4.3.5/4.2.10.