Does my NEC1300 need a firmware upgrade?

As I understand it, certain brands of DVD media are "blocked" in the
firmware of the burner. I've been burning DVDs of a brand called bulkdvd (I
believe they are manufactured by Princo). The regular DVD-Rs worked fine,
but my NEC1300 won't handle the DVD-RWs. I'm using Nero for burn, and when I
inserts one of the DVD-RWs it gets real slow. When I try to burn something
it claims that the disc isn't empty, although it came straight from the
package. Erasing the disc doesn't help either. Is this normal behaviour if a
media is blocked by firmware? I read somewhere that that the burner should
be able to burn it, but the disc would be defect. In my case, I can't even
start burning the disc.

Does anyone know wether this is a firmware issue, and if so, what firmware
version I should uppgrade to? Any other ideas what might be wrong?

"XXXX" skrev i meddelandet

Go to the firmware site - a website that specializes in firmware or go
directly to the german NEC site - they have the latest firmware
upgrade 1.09. Im still using 1.08 - Ive got to upgrade too. I think
mine came with 1.06 or something.

I just upgraded to 1.09, but no luck. It's exactly the same as it was
before.