Nec 3550A booktype isn't applied

Even though binflash shows booktype set to dvdrom for dvd+r dl this setting is not applied since all the dl i make stay on dvd+r dl booktype
Is it a bug or what ?
Using last liggy firmware

if you are using liggy’s firmware, you should find the documents about this issue.

following the instructions, try Nero-CdSpeed to change bitsetting.