Perhaps it is showing no signal as you are on channel 252 Freesports, which was removed from Freesat a few years ago, so the channel list is not updating on the receiver...and it is not getting a signal to update..and it is using the last known channel guide.
If you are doing a factory reset, it will take you through the set up process with a wizard, and will check to see if there is a signal coming through....
If there is a signal, then the channel list will update to the latest one...where 252 is not there, and your ITV on 103 is ITV1 HD...
If there is no signal, then i suggest that there is an issue, as mentioned before, with your system somewhere , causing issues with both boxes playing up. My money would be on bad cable / water in cable / cable connection issue...