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Apple then turns off


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Dec 21, 2015
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I have some problem with my Iphone. I wanted to restore it with an old ipsw and now the phone wont connect to Itunes. if i turn on the phone the apple logo shows for about 10 sec then turns off, i´ve tried to hold the Power and home button but it doesnt work, i´ve tried to hold down the home button and plug the Cable in but it´s the same thing. What can i do?
Welcome to iPhone Forums!

It's not possible to install a software version not signed by Apple on an iDevice. The ones that are available at this moment, are iOS 9.1 and 9.2. Trying to install anything else will fail, as you experienced.

To your other problem:
Remove iTunes completely from your computer, and install it again. You'll find the instructions here:
iPhone, iPad, or iPod not recognized in iTunes for Windows - Apple Support

Then connect your iPhone to iTunes again, and this time try to update to iOS 9.2. If that doesn't work, use recovery mode to restore it to iOS 9.2:
If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support