Official downgrade? No, but you can find most of the answers you seek here: For more info about firmware, check here Also you may need to force the upgrade. This information is about the A04 but should work the same for the A03: Remember, flashing your firmware, especially with unofficial firmware can be dangerous and you do so at your own risk. Make sure you do not interrupt power during the flash. You could end up with a nice expensive paper weight. All that being said, I did it to mine and it works using the v2.00 (RPC-1 + 2x for all)Enable any media to burn @ 2x on DVR-A03/103 patch.