Sony DRU-530A

I need the Sony DRU-530A firmware 1.0a but i cannot find it. Any help please?

That’s a pretty old firmware. What do you need it for? You could use one of the later ones, esp. since the newer ones support 8x -R…

Philips CD-R AUDIO 700MB CMC Magnetic 97m26s66f
Sony DRU-530A fw.1.0d
ImgBurn x8