Question about Apple iPhone 3GS Black (16 GB)

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Iphone 3Gs is just lifeless no sound nothing....Itunes recognizes it and says its in recovery mode and it needs to be updated and restored so I press restore and it starts downloading or something for about 30 min or so then the screen turns white and itunes gives an error 21. A tech told me it had something to do with the security. Please help been working on this for days....ty

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This iphone repair can be tricky, error 21 is not a good error. I'm sure it is not a software issue actually it is a harware issue. you can try following and you should be able to fix it. try replacing charging dock on the iphone and then try restoring it. your dock connector is not working properly, or try cleaning it and then try again. tech from
iphone repair mississauga

Posted on Jan 31, 2013

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Error 21 is most commonly encountered if you backed up the phone with jailbroken software and then try to restore the jailbroken software. If that's what you're trying to do, I would advise against it. Try to restore from a non-jailbroken image instead.
If that's not what you're doing, there's some other reason that your restoring image has been corrupted, and I'd recommend restoring from another computer, but that would sadly mean starting over from scratch with all your saved data.

Posted on Mar 28, 2011

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Posted on Jan 02, 2017

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My iphone is brought from korea and to nepal and iphone does not open only emergency call which is not possible.


hi dear.

You may encounter the following symptoms while updating or restoring your iPhone or iPod touch:

  • iPhone or iPod touch continually restarts but never displays the Home screen.
  • An update or restore did not complete and the device is no longer recognized in iTunes.
  • iPhone or iPod touch stops responding, showing the Apple logo with no progress bar or a stopped progress bar, for over ten minutes.

If this occurs, you can place the device into recovery mode and attempt to restore the device again. If iTunes displayed an alert with an error code, see this article before attempting the steps outlined here.

Note: In certain situations, an iPhone or iPod touch will automatically go into recovery mode after an update or restore issue. If your device is already in recovery mode, you can attempt to restore using iTunes.

Use the following steps to place your device into recovery mode. If the device is already in recovery mode, you can proceed immediately to step 6.

  1. Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
  2. Turn off the device: Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
    • If you cannot turn off the device using the slider, press and hold the Sleep/Wake and Home buttons at the same time. When the device turns off, release the Sleep/Wake and Home buttons.
  3. While pressing and holding the Home button, reconnect the USB cable to iPhone. When you reconnect the USB cable to iPhone, the device should power on.
  4. Continue holding the Home button until you see the "Connect to iTunes" screen. When this screen appears you can release the Home button:
  5. If necessary, open iTunes. You should see the following "recovery mode" alert:
  6. Use iTunes to restore the device.
  7. If you don't see the "Connect to iTunes" screen, try these steps again. If you see the "Connect to iTunes" screen but the device does not appear in iTunes, see this article and its related links.

    When using recovery mode, you can only restore the device. All user content on the device will be erased, but if you had previously synced with iTunes on this computer, you can restore from a previous backup. See this article for more information

Oct 10, 2011 | Apple iPhone Smartphone

1 Answer

I updated my iphone 3gs version 4.0.1 to 4.2.1 now it's not working. I do believe it was jailbroken and unlocked before and the newly installed version is tethered. it would not recognize my sim since it...


You cannot upgrade a hacktivated iPhone to the current version of iOS as it has not yet been cracked to work on other carriers. You will need to put your phone in recovery mode (by connecting it to your PC, then turning it off, and then holding down Home and Sleep until iTunes tells you it has detected an iPhone in recovery mode), then restore the iPhone to 4.0.1 and then re-jailbreak/hacktivate.

Dec 28, 2010 | Apple iPhone Smartphone

1 Answer

I was downloading the newest itunes. it said there was an error. and now my 3gs iphone has a frozen screen with a usb cable a arrow and the itunes logo


Thats called recovery mode.
All what u should do is restore it,
Download the version you want from www.felixbruns.de and connect your iphone to your itunes, press Shift + Restore and select the ipsw u downloaded and Job Done

Feb 19, 2010 | Apple iPhone 3G

1 Answer

My 3gs iPhone is stuck in restore needed/emergency call mode. I've tried to sync to different computer...same problem. iTunes does not recognize and then when I try to restore it gives a 23 error or 2001...


Use the following steps to place your device into recovery mode. If the device is already in recovery mode, you can proceed immediately to step 6.

Disconnect the USB cable from the iPhone or iPod touch, but leave the other end of the cable connected to your computer's USB port.
Turn off the device: Press and hold the Sleep/Wake button for a few seconds until the red slider appears, then slide the slider. Wait for the the iPhone or iPod touch to turn off.
If you cannot turn off the device using the slider, press and hold the Sleep/Wake and Home buttons at the same time. When the device turns off, release the Sleep/Wake and Home buttons.
While pressing and holding the Home button, reconnect the USB cable to iPhone. When you reconnect the USB cable to iPhone, the device should power on.
Note: If you see the screen pictured below, let the device charge for at least ten minutes to ensure the battery has some charge and then start with step 2 again.Continue holding the Home button until you see the "Connect to iTunes" screen. When this screen appears you can release the Home button:Use iTunes to restore the device.
If you don't see the "Connect to iTunes" screen, try these steps again. If you see the "Connect to iTunes" screen but the device does not appear in iTunes, see this article and its related links.

When using recovery mode, you can only restore the device. All user content on the device will be erased, but if you had previously synced with iTunes on this computer, you can restore from a previous backup. See this article for more information.

Jan 17, 2010 | Apple iPhone 3G Black Smartphone

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How can I get itunes to recognize my IPhone I've tried recovery..


Create a new user in Windows, like "test" under the control panel.
Login with that new account, Launch Itunes and update Itunes, then plug your iphone in under recovery mode, and restore factory default settings.

Dec 21, 2009 | Eforcity Apple iPhone 3GS 16GB / 32GB...

3 Answers

Iphone will not restore


Try restoring in DFU mode, which is different than recovery mode. I happened to stumble across it while trying to restore an iPhone 3G that a user unplugged in the middle of the 3.1 update. It kept showing an error of 1611 or 13 and wouldn't restore in recovery mode. I found this DFU mode option and the restore worked fine. The DFU mode keeps the iPhone OS from loading, so you don't run into as many compatibility problems. Go into DFU mode, then try restoring the phone and see if that works.
http://techierambles.blogspot.com/2009/09/restore-iphone-with-error-13-or-1611-in.html
To enter DFU mode:
1. Connect your iPhone to your computer
2 . Turn iPhone off. You may have to hold the power and home buttons down together to force the phone off
3. Once the phone is off, hold the power and home buttons together for 10 seconds exactly
4. After 10 seconds, release the power button but keep holding home until the computer recognizes that a USB device was plugged in
5. iTunes should detect your iPhone correctly, and also allow you to restore to the factory default settings

Mar 02, 2008 | Apple iPhone Smartphone

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