I really want to try this. But for some reason, even though I have installed the 3.16.10 firmware on my H2O and synced, it only ever offers me the old dictionary for download.
Edit (removing prior edits):
I had to install 3.17.0, for some reason 3.16.10 would not accept the new dictionary.
But now it works great, English and Japanese rolled into one - perfect! Thanks so much!
Now all I need to learn is how to stop making highlights and annotations by accident.