Problem burning with toshiba 5372

well one friend give me this burner and it has a problem. it reads without problems dvds an cds but the problem is when burning dvds. when the burn process reach the 98% the dvd tell me that there is a problem and that the burn fail burning at 4x. i don`t know the problem but i suppose that it can be the firmware because i think that is too old, here is a picture with the caracterists of the dvdburner

Try different softwares, like Nero or Imgburn; other media, firmware. Check also if DMA is enabled.

i try with different softs and the problem continues. dma is enbale

another suggestion? where can i download a new firmware?

Toshiba support??