>>Drudge+Wm
I thought about that after posting. I once had a week where I fiddled with the printer constantly after changing the toner, trying to get it to stop reporting it as empty. So who knows, maybe there's something to it. However, looking at the toner cartridge, I don't really see how they could do this.
It's also possible they have a unified firmware and this 'feature' doesn't impact my model.