In this post we are going to show you in a step by step guide how you can jailbreak (untethered) iPhone 4, iPad 1, iPhone 3GS, iPod Touch 3G, iPod Touch 4G and Apple TV2 running on iOS 4.3.1 using the latest Redsn0w 0.9.6 RC9 version.
Whenever you try to restore your iDevice to custom iOS 4.2.1 firmware using iTunes, you end up with errors like Error 1604, 1600, 1601 etc. To bypass such errors, the iPhone Developer iH8sn0w has released an updated version of iREB which is now compatible with all iOS 4.2.1 devices.
A quick fix is now available in Cydia store that lest you read the DRMed / rightfully purchased iBooks on already jailbroken device on iOS 4.2.1.
To activate any idevice (iPhone, iPad etc) on iOS 4.3 via iTunes, you need to have UDID of your idevice registered on a developer account with Apple. But there are two methods floating around the web which can allow you to hacktivate (activate) iOS 4.3 on iPhone without having a developer account.
If you have upgraded your iPad, iPhone 4, iPhone 3GS or iPod Touch 4G/3G to iOS 4.3 for testing purpose and now you are facing any issues with your favourite apps on this new release or you want to downgrade your device to jailbreakable iOS 4.2.1 / iOS 4.1, here is complete step by step guide to downgrade iOS 4.3 to previous iOS versions.