yes, i've tried almost all firmware available, Herrie's 1.07v2b4, 1.07v2b5, hp 420n 1.31 from Dangerous Brothers, Mad Dog 2.F8!! None worked. All of them sets the booktype, all seems fine, but when i burn the DVD, it remains with the original booktype. I've allready tried dvddecrypter 3.5.20 and Nero 188.8.131.52!! Nothing works!!!! What kind of crapy NEC drive is this!? Anyone knows someone in this situation? What did work form them?