I'm trying to update my iPhone 6 16 GB running iOS 9.2.1 to iOS 9.3.1 but when I try to install the update OTA it says "Unable to install update". How could I fix this problem? The touch ID is not available because the device is space gray with a white screen and a gold Touch ID button, does that affect the updating process?
iPhone 6, iOS 9.2.1
I would try to update using iTunes
Connect the device using a cable to a computer (PC or Mac) running the latest version of iTunes 12.3.3
The once the phone is detected choose update software
If the phone is not detected - see here
If iTunes doesn't recognize your iPhone, iPad, or iPod - Apple Support
OR
Please make a Genius appointment at an Apple Store, or go to another authorized service provider.
I would try to update using iTunes
Connect the device using a cable to a computer (PC or Mac) running the latest version of iTunes 12.3.3
The once the phone is detected choose update software
If the phone is not detected - see here
If iTunes doesn't recognize your iPhone, iPad, or iPod - Apple Support
OR
Please make a Genius appointment at an Apple Store, or go to another authorized service provider.
I will try the iTunes, thanks for a answer
You are welcome
Please let us know of any issues
Unable to install update error
