That's the whole point, I don't have any options to change the booktype, not in Nero, not in CDspeed, not in DVDinfopro, it's nowhere nohow with this burner!. With the original firmware it's always forced +R or +RW booktype (no options) and with the alternate firmware its always forced -rom booktype (again no options).
They play anything. Your fix is a good one. I use the same thing in reverse to get my LG drive to write +RW as ROM.
Thanks for the info chas. At the moment I'm still a little confused about exactly what I can and cant do without the booktype of these +RW's reverting to -rom in my burner. For example the ones that I did a full format (erase) in another burner seem to keep the +RW booktype even after I rewrite them with new data. This made me think that once the booktype was set to +RW that it would be ok unless I did a full erase on my burner.
But then last night I tried something different, I took a brand new unused +RW disc and burnt just one small file onto it in another burner (instead of the full erase that I used with the other discs). Nero said it was formatting the disc for use, then it wrote the small file and a long leadout and sure enough the disc was then set to +rw booktype. So I thought this had achived the same result as a full erase (and more quickly), but when I rewrote this disc in my burner it set the booktype back to -rom and my player borked at it again. I dont understand why the full erase lets it keep the +RW booktype after being rewitten in my burner but when I just wrote files to a new disc to set the booktype that it didn't keep the booktype when rewritten.