How can I update and restore my iPhone software?

Apr 27, 2012
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#1
My iPhone has been acting strange as of late and I think it might be best to restore it to factory. How can I update and restore my iPhone software?
 
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owieh

Contributor
Bronze
Jul 15, 2010
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Sheffield, UK
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#2
Hook it up to your computer, and restore via iTunes. Of it needs updating, iTunes will prompt you to download the firmware. Just before you restore, iTunes should ask if you want to backup your data prior to restoring... It's best that you do this even if you want to restore as new, just in case you need it later.