itunes says my phone could not be updated. error code 400
itunes says my phone could not be updated. error code 400. what is the problem / fix?
Windows, Windows 6
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See If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support. If you're trying to update over the air try using iTunes instead, or vice versa.
If the code is -4000 then disable Find My IPhone before updating with iTunes for Windows then enable it again afterwards, or update over the air.
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