UHD Drive Tool is a handy GUI tool that allows users to downgrade the backup-unfriendly firmware on a 4K UHD drive, so that the drive becomes capable of ripping/backing up 4K Ultra Blu-ray discs with DVDFab. If your drive is already with friendly firmware, you don't need to use the tool to downgrade it again. UHD Drive Tool can inquire about the drive and tell you if you need to change the firmware, then it helps you do that. If all you want is to play and rip DVD/Blu-ray discs through that drive with DVDFab products, no need to downgrade it.