A must firmware upgrade for "Region Free" playback, no problems reported, please use Nero to burn file to disk (Use free trial if need be) http://www.nero.com/en/nero-prog.php Windows software will not work. Other than that, good to go. Load it up and let it go! 2910 http://mapage.noos.fr/gbogros/d21zsavd.zip 3910 http://mapage.noos.fr/gbogros/d31zsavd.zip Firmware Upgrade Procedures: ** Be Careful updating your firmware, it is recommended that you have this done by a qualified Denon technician** Burn the D21 or 31*.cfw data files to a standard data CD-R at the SLOWEST possible speed supported by your CD writer (e.g. 4x or 8x). Burning to disk using Nero: 1. After starting Nero close the default wizard, which will lead you straight to the main burning menu. The program will work in demo/trial mode. 2. Cancel the “New Compilation” screen which enables you to choose what kind of CD you wish to burn. 3. Go to “file” and choose “Burn Image” 4. Find the previously downloaded Firmware Update file on your Hard Disk (.cfw file). Select it, click on “Open". Recommend saving to your desktop or familiar location for easy access. 5. Be sure to have the "Disk At Once" and "Finalize CD" boxes checked before starting the burn. 6. Insert the CD-R/RW disc into appropriate drive and wait for the onscreen information if the CD-R/RW disk to be written if it has not been inserted prior to this point and complete burning process. Once burning is complete move on to upgrade procedures below. *(Reference to power on/off refers to actual power button, not illuminated stand-by button).* 1) Turn on the power. Open the disc tray and load the CD-R/RW disc. 2) Press "OPEN/CLOSE" button. 3) The following indications appear on the FL display: "CLOSE"-"LOADING"-"WRITING"-COMPLETE" Takes approximatley 45 seconds so don't get concerned that it's taking to long. 4) On "COMPLETE", the disc tray will open. Turn off the power. 5) While holding the "PLAY" and "OPEN/CLOSE" buttons on the unit down simultaneously, turn on the power of the unit. The FL display indicates the Play and Pause symbols. To close the disc tray press "OPEN/CLOSE" again. 6) Initialization: Turn off the power, and then turn on again while holding the "SKIP FORWARD" (>>|) and "PLAY" (>) buttons simultaneously. Right after you turn power on press the "OPEN/CLOSE" button for approx. 3 seconds (make sure you press the open/close button before the 2910/3910 leaves the display field). Continue holding all buttons until the display reads "INITIALIZE". NOTE: If "INITIALIZE" is not displayed on the first attempt, press SKIP FORWARD and PLAY simultaneously followed by OPEN/CLOSE for more than 3 seconds again. Repeat this procedure until successful.