I understood so as well before I was replying. I myself have had two Pioneer DVD writers and often used OEM firmware releases to add bitsetting. Since Buffalo's Melco Inc. isn't even a dedicated ODD company, they don't care much, not that there's zero likelihood. I mean Pioneer and LG know how to make and adjust firmwares, but not Buffalo. Buffalo's just one of the many "traders" that just buy hardware products from big manufacturers in Japan, South Korea, Taiwan, etc. and then only rebrand them.
BTW, LG started to include bitsetting since the then-notorious N0AD incident. LG had been a dedicated DVD-RAM and DVD Minus company and so never wanted to make their DVD+RW/+R addition too obvious always reluctant even to talk about + support and ignoring bitsetting support by other competing makers like Ricoh, Philips, NEC, BenQ, Lite-On, etc.