TS3694 My Iphone 4 comes up with "Cannot restore due to Error 21" - have no idea what this is. When I attach a different Iphone to my PC, it updates & does everything properly, no security settings issues either. Can anyone help please?
My Iphone 4 comes up with "Cannot restore due to Error 21". My security settings are all ok as when I connect another Iphone to my PC, it updates & works fine. Does anyone know what Error 21 means please?
When you searched Google for "iPhone Error 21" what did you find?
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This problem started last year when ios 8 was released. I think apple is trying to force users to buy music on iTunes store and that's why it's impossible to sync other music and also that's the reason why they haven't solved this serious problem. That's really disappoints me and i'm angry with apple because i have like 10 gb of music in mp3 and i can't sync music from iTunes to my iPhone.
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Try holding down CTRL as you launch iTunes to see if it will repair the drivers.
Or try Cerbu's post here.
Or see TS1538: iOS: Device not recognized in iTunes for Windows, in particular section 5, forcing a driver update.
Please let us know which approach works for you...
tt2 -
Can anyone help please with this download error?
Is this on Wi-Fi or Cellular data?
What happens when you switch from one to the other?
Has the device been restarted?
What about Settings > General > Reset > Reset Network Settings? -
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What are you trying to accomplish?
You can only connect your phone to your MAC for tethering only. -
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What version of iTunes do you have installed? If you are trying to update to iOS 6 you need iTunes 10.7 or later.
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If your music was purchased within iTunes, then you should be able to get your purchases restored. If it was music you imported, then you must re-import the CD's. So sorry that you lost it all. Most people never back up their data.... even when they talk the talk but never walk the walk. 3 copies, and rotate them. son, father, and grandfather (Old school stuff but if you have a bad disc, the other saves may be your rescue!)
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Fix #1
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Fix #2
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If that's not what you're referring to then you should describe what is happening in more detail. Remember we can't see your Mac or your iPhone so need detailed and accurate descriptions of what you're experiencing.
Also we need infomartion like do you have an iCloud account and are you logged into it on all of your devices, iPhoto and Mac? do you have Photo Stream enabled on both.
OT -
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