unwanted reload of iptv channellist

hi all

i had changed the channellist and loaded it threw the menu from usb-stick, this goes without problems.

But after a while at reboot from box, my channel list is replaced by another one.

does anyone know the location on the box of the xml file or how to disable the automatic refresh of the channel-list.

can somebody help me with this issue?

I restore my iptv channellist from usb, but after a while the default iptv list comes back

how can I solve this?