This will guide you in putting your device to DFU mode and let you bypass the passcode-lock to recover your device from being disabled.
This guide works for all iDevices
DFU mode is DIFFERENT from Recovery mode. The obvious difference is that in Recovery mode your device's screen shows a picture that says connect to iTunes (picture below) while in DFU mode, there's no display at all, even the backlight is OFF. If you see anything in the device's screen, that means you're not in DFU mode.
Here are some ways to put your device in DFU mode:
Procedure A:
- Plug/connect your device to a computer (Mac or PC)
- Turn it OFF
- Press and hold the POWER and HOME buttons together for EXACTLY 10seconds
- Release the POWER button but keep holding the HOME button until the computer beeps indicating that a USB device is recognized
If you don't get it at first, try holding the buttons for lesser time.
Procedure B:
- Plug your device to a computer
- Press and hold POWER and HOME until the device turns OFF but keep holding for 10 seconds
- Release POWER but keep holding HOME until the computer beeps indicating that a USB device is recognized
If the phone turns ON during step 2, start over and try holding the buttons for lesser time.
Procedure C:
- Plug your device to a computer
- Turn it OFF
- Press and hold POWER and keep holding it
- As soon as you see any display on the screen, press and hold HOME
- Keep holding the 2 buttons together for EXACTLY 10 seconds
- Release POWER but keep holding HOME until the computer beeps indicating that a USB device is recognized
If you don't get it at first, try holding the buttons for lesser time.
NOTE: Release HOME button once you hear the beep.This is how iTunes should look like if you have been successful:
-just click OK, and you should see this 2nd image.
Click 2nd image to view larger. NOTE: Image above is from iTunes 10.
After putting your device in DFU mode, you can now restore your device thru iTunes without having to enter the passcode.
You can also restore to a version of your choice as long as you have saved your SHSH blobs with Cydia's server.
It is important that you do this to make sure that you can restore back to your previous iOS version if you're having issues with the new one. CLICK HERE to learn how to save your SHSH blobs.To download the official IPSW file for your desired iOS version,
CLICK HERE.
On iTunes, before you click the restore button, you must first, hold
alt/
option (if you're using a Mac), or
SHIFT (if you're using Windows), on your keyboard. This will let you browse for the IPSW file you just downloaded.
WARNING: Restoring will remove all data on the device like songs, contact and notes including the jailbreak and unlock (for iPhones), so be sure you backup everything before you do it.
Also read these other guides:
iOS 4.2.1 JAILBREAKhttp://www.fixya.com/support/r8764632-jailbreak_ios_4_2_1_all_idevices_iphone
iOS 4.1 JAILBREAK
http://www.fixya.com/support/r6356589-jailbreak_ios_4_1_iphone_4_3gs_ipod
iOS 4.0.1 JAILBREAKhttp://www.fixya.com/support/r5452955-jailbreak_all_idevices_iphone_4_3gsUNLOCK
http://www.fixya.com/support/r5537989-unlock_iphone_4_3gs_3g_or_older_ios
Credits:
BigBoss
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