I don't know what they did with CSTJ. I flashed to it and booktype didn't work anymore. Programs that I used before (Liteon Booktype utility, KProbe, DVDInfoPRO) said that my burner doesn't support booktype (?). Now If I flash it to any firmware newer that CS09 booktype isn't supported. Before CSTJ I used CS0C and booktype worked, now it doesn't.