Originally Posted by chancooluk

If your computer sees your drive as a "DVD DD DW1620" then you have 'B' series firmware and can update to B7W9.

If your computer sees your drive as an "ATAPI DVD DD 2X16X4X16" then you have 'G' series fimware and will need to crossflash in order to use B series firmware.

When you update your firmware always ensure that there is no disc in the drive. DO NOT reset or turn off your computer whilst the update is taking place. Always reboot after updating the firmware (you will be prompted to do this anyway). And then your drive will be fully updated.