Well, there is a Hitachi variant of the H10N, just like the 4167B. Curiously, the Hitachi variant has different firmware numbering, JJxx, as compares to LG's version which uses JLxx. Looks familiar, doesn't it? I'm not sure if the Hitachi firmware turns the drive into a UDMA4 device though. Anyway, ala42 seems to have passed it to Ian at cdrlabs, who promptly put it online, so you can get JJ11 here :
(sorry, but there is no way to post a direct link to the post in question, so you have to scroll through the whole thread to find it)
Nothing we can do about the availability of 12x DVD-RAM discs though.