The ROM update is only for the flash ROM on the card. It lets you update the firmware. I have one, and it works fine. You cant boot 3.9 with just the card, you still need CD filesystem software. The drives work well in 3.9, BUT to boot Amiga 880k disks on the drive you need the Kewalda adapter. This connects to the Catweasel and then to the Amiga floppy header making the drive act like a 880k DF0. If you want two drive to work in bootable Amiga games, disks you then need TWO kewalda adapters. I keep one old external drive to use as a second DF1 for bootable multi disk games.