Help with bitsetting on my 1693S


i need some serious help with my liteon dvd writer.
i have posted a thread on another forum with my question.

link is here:

please visit it and help me solve this.

thank you

you must enable bitsetting before you burn a disc. run the liteon booktype utility, set the booktype to dvd-rom and save it. now every + media you burn will be set to -rom.

it is not possible to change the booktype after the disc was burnt.

yes ive done this already, and with no luck.
the booktype setting tool still says the disc is a DVD+R DL booktype, even nero says this.
why isnt the liteon on tool saving the changes???