Background Scan

[Arnather]

Hello, need some help please. I have the "nabilosat dm500 v 0.8" image flashed to my box and it's quite good. I need to disable background scan or services update but I cannot find that option anywhere on the image. I need to do this because I don't want the ~~~~ channels. I have Googled for the last three hours but cannot find a solution.
Thanks,Arnather.