You're looking for information on a Smart TV, specifically regarding YouTube, and possibly a software or firmware update. However, the details you've provided ( 617 , 391 , repack , download , latest version , extra quality ) seem to suggest you're looking for a specific type of software, firmware, or perhaps an APK for YouTube on a Smart TV, or even a device like an Android TV box. Let's clarify:
To get the , follow these general steps: You're looking for information on a Smart TV,