Hello clevertech74
I think you install it experimental or factory image ( you cannot install softcam on it ) as cccam, oscam or others.
I think is better you install new or other image for your box. Here you have images for your box .
DM520 HD | DM525 HD Images. My recommendation is Pure2, Dreamelite or OpenEsi.
PS. You don't answer me about problem with serchin channels.
