UPDATE BB 6.15
DOWNGRADE TO 4.1
JAILBREAK WITH redsn0w 0.9.6b5
INSTALL ULTRASN0W 1.2
HOW DOWNGRADE :-
1-Put your iPhone in DFU
2- adding Saurik’s Server address to your system hosts file
" Locate "C:\Windows\System32\drivers\etc\" for Windows and "/etc/" directory for Mac, then locate “hosts” file andOpen it in Notepad (for Windows) or TextEdit (for Mac OS X) and add this at the bottom of the file.
74.208.105.171 gs.apple.com "
3- restore your iDevice to iOS 4.1, 4.0.2 or 4.0.1 by clicking on the iPhone icon on the left sidebar of iTunes then hold left “alt” button on Mac (“Shift” button on Windows) on the keyboard and then click on “Restore” then release the alt button, Now Select the iOS 4.1, 4.0.2 or 4.0.1 ipsw file you have already downloaded in Step 1 and let iTunes do some automated Steps.
4- You will need to exit recovery mode, so download TinyUmbrella. Run it and the click on “Exit Recovery” button. Your device will now restart normally.
Now you got back to iOS 4.1, 4.0.2 or 4.0.1 and you can jailbreak your iPhone using redsn0w 0.9.6b5
TESTED ON MC MODELS
DOWNGRADE TO 4.1
JAILBREAK WITH redsn0w 0.9.6b5
INSTALL ULTRASN0W 1.2
HOW DOWNGRADE :-
1-Put your iPhone in DFU
2- adding Saurik’s Server address to your system hosts file
" Locate "C:\Windows\System32\drivers\etc\" for Windows and "/etc/" directory for Mac, then locate “hosts” file andOpen it in Notepad (for Windows) or TextEdit (for Mac OS X) and add this at the bottom of the file.
74.208.105.171 gs.apple.com "
3- restore your iDevice to iOS 4.1, 4.0.2 or 4.0.1 by clicking on the iPhone icon on the left sidebar of iTunes then hold left “alt” button on Mac (“Shift” button on Windows) on the keyboard and then click on “Restore” then release the alt button, Now Select the iOS 4.1, 4.0.2 or 4.0.1 ipsw file you have already downloaded in Step 1 and let iTunes do some automated Steps.
4- You will need to exit recovery mode, so download TinyUmbrella. Run it and the click on “Exit Recovery” button. Your device will now restart normally.
Now you got back to iOS 4.1, 4.0.2 or 4.0.1 and you can jailbreak your iPhone using redsn0w 0.9.6b5
TESTED ON MC MODELS