Updating itunes 9 02
Apple today released an updated version of i OS 9.2.1, which is designed to prevent the "error 53" device-bricking message that some i OS users received after having their i Phones or i Pads repaired by third-party services using components not sourced from the original device.
Non-matching repair components that affected the Touch ID fingerprint sensor caused an i OS device to fail a Touch ID validation check because the mismatched parts were unable to properly sync.
Using Recovery Mode (i Phone 7)Using Recovery Mode (i Phone 6S and Older)Using Cydia on a Jailbroken i Phone Community Q&A This wiki How teaches you how to restore a previous backup on your i Phone without updating it to the latest version of i OS in the process.
Earlier today, Apple released the i OS 9 update for the i Phone, i Pad, and i Pod touch.
These are instructions on how to update your i Phone to the latest version of i OS using i Tunes for Windows.