The DMR EZ28 unit, as well as the DMR EZ48 both utilize a modified form of the Dreambox mainboard, as discovered whemn I investigated the chip numbers - I reported it on DTVUSAForums.
When it comes to playing DivX videos, there seems to be two versions that the player accepts, others it refuses since the player does not understand the specific stream optimizations. I'll have to play around with the encoder settings.
The DMR EZ28 and DMR EZ48 will not accept remote control commands other than the original equipment - this is a fix to prevent region-unlocking by remote control codes which can be achieved on the EZ27.
What's more, the player has a special region control RPC2 watermark detection enforcement. Even if you use DeCSS and convert the movie to RPC1, it still can find the control codes in the stream, and will issue out a "This disc is not playable in your region." error. URRGH! I tried discs burnt from several brands of DVD players. I have two dozen copies of "Impy Superstar Missione Luna Park" and it won't play on this player - I can only use a DIVX recoded file.
As for the ATSC capabilities, it makes fine recordings. Here's two episodes of "Animalia" I recorded:
0114 "Brain Drain" megaupload.com/?d=P4OQBKKP
0217 "The Dragon and the Night" megaupload.com/?d=BG5HZA1B
(copy and paste into browser)
The only time it has problems is when the DTV signal drops out. It sometimes gets stuck and needs to be reset. The DVD-RW must be reformatted if it was scheduled to record during such a dropout, and it starts recording during the dropout.
This DVD player fails at being a party DVD player as it accepts too few formats.
If you still have the DMR EZ27, I'd like to have it. I've got a few films that are not released in the U.S. i.e. "Impy's Wonderland" "Wickie und der Starke Manner" "Hui Buh" "El Raton Perez" and "Bradner Kaspar"