Returning to original bitset

I have a DVD+RW with a bitset of DVD-ROM. I am trying to return it to a DVD+RW bitset. I have tried both Nero and DVD Bitsetter, neither of which have worked. can anyone help :confused:

What drive are you using?
What firmware are you using?

Try a full format on the DVD+RW disc, and then try another burn setting the booktype to DVD+RW.
You can also try CD-DVD Speed for bitsetting

Thank you so much, this fixed my problem (inside the tool i used format, it worked!)
Thx again