|
Welcome to the GSM-Forum forums. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. Only registered members may post questions, contact other members or search our database of over 8 million posts. Registration is fast, simple and absolutely free so please - Click to REGISTER! If you have any problems with the registration process or your account login, please contact contact us . |
|
Register | FAQ | Donate | Forum Rules | Root any Device | ★iPhone Unlock★ | ★ Direct Codes ★ | Direct Unlock Source | Mark Forums Read |
iPhone, iPad, iPod - FAQ, Guide, How To, Tutorials , News iPhone, iPad, iPod Jail break, Activation and Unlocking Step by Step How-To: Help, Guides , Tutorials and News |
| LinkBack | Thread Tools | Display Modes |
02-28-2017, 09:02 | #1 (permalink) |
Moderator Join Date: Oct 2011 Location: U.A.E
Posts: 2,356
Member: 1676524 Status: Offline Sonork: 100.1608473 Thanks Meter: 2,713 | 7 solutions for Error 21 when Restoring iPhone 7 ways to fix iPhone/iPad Error 21 Solution 1: Restart your iTunes Sometimes, the error can be solved by restarting the iTunes. Simply shut down your iTunes, and open it again. Connect your device with your computer, and take a look to update once more. Now, the error 21 on iPhone/ iPad is resolved. Solution 2: Update your iTunes On every occasion, if you want to restore or update for your device, make sure that you have the latest version of iTunes installed on your computer. For Windows users:
In many cases, the anti-virus program that is installed in your system could cause numerous errors, including the error 21. Close your anti-virus, and update your device once again. Solution 4: Remove unnecessary USB devices Make sure to disconnect all the devices you do not use from your laptop. Presumably, a number of those devices can affect the restore process; cause the errors 21 for your iPhone/iPad. Solution 5: Check Sensor cable It is quite difficult; however, if you know a little about hardware, you can fix this error. Just open your device, and remove the screw that is used to connect the battery. You will see a device cable, merely disconnect it, and then place it back. Solution 6: Recovery mode Step 1: Long- press the Power button for a few seconds and make sure to connect your iPhone/iPad to your Mac/PC before performing this task. You will see a popup ‘slide to power off’. Slick it to power off your iPhone. Step 2: Now press the Home button, then Power button at the same time while holding home button. Step 3: Past at least 10 seconds, release the Power button, but keep holding Home button until iTunes pops up with a message ‘an iPhone in recovery mode has been detected’. Step 4: once you are in DFU mode, your iPhone/iPad screen is black. Now the error 21 has been fixed, you can restore .IPSW firmware without errors. Solution 7: Check outdated software You might see the message “The obligatory resource cannot be found.” The error could happen if you are in instances below:
Above are the best seven ways to mend iPhone error 21 that you can try on your own. If the error still remains, you should contact with Apple to get the best solutions for the error 21. Source: iphoneized |
The Following 3 Users Say Thank You to ...:::SHAMIM:::... For This Useful Post: |
Bookmarks |
Thread Tools | |
Display Modes | |
| |
|