If you did a restore, close Kies immediately. Browse to C:\Users\[Name]\Documents\Samsung\Kies\Backup\*.sbu . Use a third-party .sbu extractor (like SBU Extractor) or re-import into Kies and choose "Advanced Restore."
It is used to check for and install official firmware updates, including the upgrade to Android 4.4.2 for compatible legacy models like the Galaxy Note 2 or S4. Requirements and Setup Samsung Kies - Download samsung kies for android 4.4.2
For a device running Android 4.4.2 (KitKat) , the correct desktop software to use is Samsung Kies 3 Why Samsung Kies 3? If you did a restore, close Kies immediately