Upgrade Toshiba SD-R6112 to DVD +R?

I have a Toshiba SD-R6112 DVD drive (DVD-R/-RW). Is it possible via a firmware upgrade or hack to enable this drive to write to DVD +R/+RW?

Thanks for the help.



You maybe could update the official firmware or make the drive RPC-1, but not more.

What firmware is on the drive?