CDFreaks.com reports that although Yamaha has quit the CD-RW drive business, that Yamaha hasn't stopped improving their drives via firmware upgrades. On the Yamaha website you can find firmware 1.0g for the Yamaha CRW-F1 drive:
Download Yamaha CRW-F1 Firmware v1.0G
Download Yamaha CRW-F1 Firmware v1.0G