I have to say, the OM receiver is the worst box i have ever encountered.

The box must be powered off to switch between cable and satellite. The switch is at the back of the box.

After a while, if you plug it on and off, it will wipe the bootloader off one of the sides (i have got a few of them with the satellite bootloader wiped off - and guess what, you cant even jtag the thing and dreamup wont even recognose it - just a green light). All in all, its a bad attempt to clone the 500s into a new box. I would stay away from these if i were you.