1: Download the latest version of RedSn0w from below.
2: Download the firmware you would like to upgrade to from here.
3: Extract the RedSn0w zip file by double clicking it and then afterwards open it..
4: Click Extras from the RedSn0w menu.
5: Click Even More from the Extras menu.
7: Choose the firmware you would like to update to from the dialog box that appears and click the Open button.
8: You will be asked if you would like to Prevent baseband update. Click the Yes button.
9: You will be told that Pwned DFU mode is required. Click the OK button.
10: Connect your iPhone to the computer, turn it off, and click Next
11: RedSn0w will now guide you through the steps to get into DFU mode.
12: Once your device enter DFU mode the actual Jailbreak process will start and exploited with Limera1n.
13: Redsn0w will tell you when the restore has been completed successfully.
ultrasn0w isn’t yet updated for 6.x
- by now you probably should be taking advantage of the extremely cheap IMEI-based unlocks of iPhones sold by established online retailers like http:://cutyoursim.com
- still, IMEI-based unlocks don’t work in all cases. We’ll announce when ultrasn0w is ported up to 6.x
- redsn0w will still hactivate your 3GS or iPhone4 if you run it before the device is activated. Due to the current tethered 6.x JB status, redsn0w now hactivates 6.x without requiring subsequent tethered boots. If you accidentally hactivate with redsn0w, use the “Deactivate” checkbox available from the Jailbreak screen, not the normal one in “Even more”