韌體下載網址如下:

http://sony.storagesupport.com/dvdrw/firmware.htm#1

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Allows your Dual RW drive to record at 4X on 4X compatible DVD-/+R media.
Improves reading and writing performance and reliability.
Reduces vibration noise for the discs with unbalance or eccentricity.
Improves audio playback on written discs with stand alone systems.
Improves reading and writing performance with 8cm DVD-R/RW.
Increases readability with Recordable Double Layer Disc.

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以上為500A的

其餘的至該網頁往下拖拉即有~