I would suggest you try the link below for your images. This is probably one of the best places to get images for this box. You will have to remove the underscore and make hXXp read http to use the link.
LINK REMOVED
<p>Be warned that not all the images may work with your box, thats sometimes the problem with a clone box. They will install OK but may stall when booting up. It thats the case you install another image and try again.
To be honest the image i'm using on mine is quite old now but its stable and it does what i need it to do so i see very little point of changing it. I'm running an older version of Dream Elite Blackhole on mine
which works fine. Find an image that suits your needs and then stick to it is the only advice i would say, unless you like playing.
The images modified by Rami are the one i find the best for these boxes.
To install the image you just do it over the boxes web interface, the process is the same regardless of what sim the box has installed.. Connect the box up to your router and then reboot it while holding the power button down on the front.
It will then display an IP address on the front display. Go to a PC connected to the same router and type in the ip address displayed the DM800 into Internet Explorer.
You will then have the boxes web interface in front of you.
Follow the link below and that will explain everything. Obviously fixing the h**p bit with http first.
Some of the images are in German from the link, but its self explanatory once you have the web interface in front of you.
Nano