Before downloading iTunes check if you have 32 or 64-bit Windows system.
Click on Windows start icon - search for "computer" to list
"This PC" or "Computer"
Right click and left click on "Properties" to check (See image below)
Please click: Here
1.Click [Download Now].
2.Save the file (select the location if necessary).
3.Disconnect the phone if it's connected.
4.Run the downloaded file and follow the
instructions to complete the installation.