I purchased 2 x DM520HD both has OpenATV 6.1 installed. I configured the image with plugins etc and created a backup using Dbackup to USB - the file created was
openATV-dm520-exp-2017-12-30-21-10.tar.gz
Using DBackup again I flashed the above image to my other DM520HD and when it restarted it got stuck on the red light on front.
I have tried to go into recovery mode by holding the standby button down but nothing helps
HELP = what can I do next, can I use the mini USB port on back to recover my box.