Depends on how much of a risk you're willing to try new user-created F/W. Someone found that the LG's F/W had a typo for this media type and fixed it in a hex editor, seemed to work.
updating the F/W requires using a command prompt and running a flasher.exe application by devilsclaw (a generic F/W updater application for optical drives).
and the fixed F/W (not really sure if i'm allowed to post this or not but I'll try it anyway):
then extracting the .bin into the flasher.exe folder running the command
flasher -D (to get the Drive ID then use that below)
flasher -d [Drive ID] -f hl20.bin
Other than that this drive doesn't seem to support this media.