Thanks for answering. NecBinflash 1.62 identifies my new DVD writer as an Optiarc DVD RW AD7280S 1.01. Nec InfoTool agrees. My packing slip and the label on the DVD writer both say Sony Optiarc AD7240S-OB, and I didn't notice the AD7280S business at first. I downloaded your 101.zip file of firmwares for the AD7240S, and when I tried to flash this DVD writer with your 101bt_rpc1.bin I got messages saying (this is no surprise, now): Firmware is for a different drive, Identified drive: 188 -3131, and Detected drive from firmware: 77 - 3038. What should I do now?