http://www.ita.sel.sony.com/support/pc/pcgtr1a/
http://www.ita.sel.sony.com/support/pc/pcgtr2a/
“This utility will update the Matsushita® UJDA745 DVD/CD-RW Drive Firmware. This firmware update improves the reading performance.”
My TR2 came with a UJDA755 drive, so I’m leaving the firmware as-is, but UJDA745 owners could benefit from this. You can check your drive model by clicking Properties on the drive under My Computer and then the Hardware tab.