iPhone 3GS: 4.1 through 4.2.1 4.3.1 through 4.3.3 5.0.1 and 5.1.1 (old-bootrom iPhone 3GS is untethered on all versions).

This device isn’t eligible for the requested buildĮrror 160X – The hosts file is blocking Apple’s server gs.apple.Redsn0w is a tool for Mac and Windows that provides untethered jailbreaks for iOS versions including: Obviously things in life do not always go to the plan, there are some variables that will hinder the process…. If you mistakenly upgraded an unlocked/jailbroken iPhone via iTunes to a regular iOS update you will end up on one of these basebands and lose that unlockable functionality.

These are not currently unlockable with Ultrasn0w. The official basebands installed for iOS6 these are not unlockable To be absolutely sure about the boot rom – check if you have iboot 359.3 What basebands are unlockable with Ultrasn0w? iPhone 4 This will not work on iPhone 4s and iPad2/iPad2 known as A5 devices.Ĭheck your iPhone 3GS serial number, on iPhone – Settings > General > About Look for the Serial Number – if the 4th & 5th digits are below 40 you are lucky and have the old boot-rom. Previously users had to create their own custom IPSW files, but the latest redsnow avoids this. You also can bypass ultrasn0w and just pay out the original carrier to unlock the phone by using an online service like But if you still want your baseband preserved but don’t rely on ultrasn0w then you are good to go. Please note at this point ‘ ultrasn0w‘ is not ready for iOS6 eventhough Cydia is, so if you rely on your baseband being unlocked by ultrasnow you need to wait 2 days before it is released. This process has been tested and successfully installed/Jailbroken on a iPhone 3GS old boot rom device that has been previously jailbroken. If you are new to this it can well be intimidating with loads of jargon but take your time and go through the information below. The process of getting this job done requires a number of steps (but are easily done), which are downloading the official iOS 6 firmware from Apple, upgrading iTunes to the latest version, getting the latest redsn0w software from the dev team. How to upgrade a previously jailbroken iPhone to iOS 6 and preserve the baseband.

And if you need that baseband preserved just remember to click on the preserve baseband when prompted. If you are looking to downgrade to an earlier iOS version such as from iOS 6 to iOS 5.x or downgrade between iOS 5.1.1 or 5.1 or 5.0.1 and your SHSH blobs are on Cydia you can use the same restore procedure in the guide to restore to that iOS the only difference is that you need to specify the correct iOS IPSW that you want to downgrade to. If you don’t care about the baseband and are already working with an unlocked IMEI, follow this quicker jailbreak guide. The jailbreak is a mixture of tethered and unthered boots at this stage: The latest version of redsn0w allows iPhone 3GS and iPhone4 to be jailbroken to iOS6. If you don’t rely on an iPhone unlock with ultrasn0w then you can update and jailbreak ios 6.0 – 6.1.2 with evasion – guide here In the meantime this information below will only work if you have your SHSH blobs saved locally or on Cydia. With iOS6.1.2 now available the window to upgrade jailbroken devices to iOS 6.1 is now closed, iOS 6.1.2 is currently not jailbreakable with redsn0w (but it is with evasion!)- this post will be updated when the next version of redsn0w is released to jailbreak iOS 6.1.2

Latest version of redsn0w for iphone 5