unable to sync iphone 6 8.1.3
Hello, Recently download the new iTunes and when i connect my iPhone 6 update(8.1.3) its saying
'THIS IPHONE CANNOT BE USED BECAUSE THE REQUIRED SOFTWARE IS NOT INSTALLED. RUN THE ITUNES INSTALLER TO REMOVE ITUNES. THEN INSTALL ITUNES AGAIN'.
I have re downloaded it several time and i have no idea what too do. hope someone can help me with this.
iPhone 6, iOS 8.1.3