iPhone Dev Team releases Redsn0w 0.9.9b5 to jailbreak iOS 5 Firmware

iPhone Dev team has released a new jailbreak tool, Redsn0w 0.9.9b5, to jailbreak the iOS 5 firmware. Yesterday, Apple team rolled out the much awaited iOS 5 update for all iDevice users, which includes more than 200 features to enhance the entire experience of this mobile OS.

Today’s Redsn0w release is nothing but a tethered jailbreak. That means you will have to jailbreak your devices whenever you reboot the devices. Also, if you’ve upgraded to iOS 5 firmware, it will automatically upgrade the baseband value of your iPhone, and you can’t unlock it using any other unlocking method. However, there is no need to worry about untethered jailbreak. Chronic Dev team has already found some exploits, which will be used for future userland jailbreaks.

For Redsn0w 0.9.9b5 tool, iPhone Dev team has suggested few guidelines. Please read them below.

With today’s official iOS5 release, redsn0w has been updated to 0.9.9b5 to include the public URLs for the IPSW files.  This way, first-time iOS5 jailbreakers don’t need to supply the IPSW file manually. It’s still a tethered jailbreak on all except the old-bootrom iPhone3GS, and it doesn’t apply to iPad2 or the upcoming iPhone4S.

Because the jailbreak is currently only tethered for most devices, we’re not going to release a new PwnageTool yet.  Instead, we’ve decided to build some of PwnageTool’s functionality into redsn0w (since you need redsn0w to “Just boot tethered” on every power cycle anyway).  The new “Custom IPSW” button on the Extras screen will create a custom IPSW without the baseband update for 4.3.3 or 5.0gm (iPhone3GS and iPhone4 only, for now).  Remember to NOT accidentally restore to the stock IPSW after you create the custom one!  The custom one begins with NO_BB_ (for “no baseband”).  On Mac iTunes, you select an IPSW by holding down the Option key while clicking “Restore”.

You must enter “Pwned DFU” mode before trying to use the NO_BB_ IPSW with iTunes (and your hosts file cannot be pointing to Cydia’s servers due to the new blob nonce mechanism they’re using in iOS5).

Version 0.9.9b5 is available only for Mac for now, until we can do more testing on the Windows version of “Custom IPSW”.

We’re currently working on a normal compatibility update for existing ultrasn0w unlockers.  After that we’ll try to fix the iBooks issue on jailbroken iOS5.

Download Redsn0w 0.9.9b5 to jailbreak iOS 5 Final

[We've removed the downloadable links from our site due to policy violation issues. Sorry for the inconvenience.]

Download iOS 5 Firmware (Direct Download Links)