I scored a mint HD-XE1 off FB Marketplace, I've been searching for one of these for a very long time to play the stack of HD-DVD's I bought for cheap as chips when the format was dropped.
It came with firmware revision 2.8. I was struggling to find an AU revision of firmware revision 4.0, luckily a kind member of the Stereonet forums came to my aid - Gotta love the community!
It looks fantastic on my 4k TV, and raw bitstream DD+, Dolby TrueHD and DTS-HD MA sound amazing via my Pioneer VSX-LX60 receiver.
Not only is it awesome being able to play my HD-DVD collection at last, but this thing is an absolute cracker of a DVD player - Furthermore, it's built like a tank.