If want update your phone to Android Oreo firmware must use the Odin3 v3.13.1 version or higher. If want saves your data do a backup before starting!! !!
In order to save the software select the DOWNLOAD button and choose the desired location. Then let’s launch the Samsung HARD Downloader. If everything is correct click on DOWNLOAD button. Let’s use this database to choose appropriate software.
Visit our following website: Samsung download firmware.Download and Install Necessary Tools and Drivers