Problem updating itunes 10 6 3 No email private sex
To restore, affected users must then plug their devices into i Tunes on Mac or PC to restore the device.
Details are sparse at this time but the issue appears to be related to the fact that the OTA attempts to download i OS 10.0 and then i Tunes updates to i OS 10.0.1.
Now before we get to the nitty-gritty's of how to fix i Tunes Error 21, I'm sure you must be won-dering what is i Tunes Error 21 (i Phone Error 21) to begin with, and why does it have this strange obsession with your phone!
The most common reason for i Tunes Error 21 is that your i Tunes is trying to download the restore files (.ipsw) but is unfortunately being blocked from authentication.
On windows, head over to “My Computer” → C:/ DRIVE. Up next, move to Windows → System 32 → drivers → etc and search the “Hosts” file.
First off, turn off antivirus program on your computer. Up next, you need to search for your “Host” file on your computer.
Generally these errors are a result of some security software package interfering with your restore, and it usually has an easy fix.
So here we're showing you 8 different ways by which you can fix i Tunes error 21 or i Phone Error 21, restore with ease, and continue using your device!
Hold on the sleep/wake button at once for about ten seconds. Connect your device to the computer, launch i Tunes and try to update again. It might have happened to you that you're trying to restore your i Phone but no matter what you do, i Phone won't restore because an i Tunes error 21 or i Phone Error 21 keeps popping up!It's like a whack-a-mole, you keep trying to restore, but that infernal i Phone Error 21 comes again.3) On the pop-out window, choose Browse my computer for driver software. If you don’t see usbaapl64 here or if there isn’t a Drivers folder, look in C:\Program Files (x86)\Common Files\Apple\Mobile Device Support\Drivers. Unplug your i Phone 7, then reconnect it using USB cable.4) Then choose Let me pick from a list of device drivers on my computer. 8) Then you will be lead back to Install From Disk window. Open your i Tunes and see if your i Phone 7 can be detected or recognized by i Tunes.
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If your i Phone or i Pad won't finish downloading or installing i OS, here's how to get it going again!