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This box is supposed to be used with a satellite dish. The searching-for-Freesat, is a function appropriate to satellite TV recording, or similar operation.
So it's not going to find anything, in its Search mode, unless it's connected to a satellite dish.
In fact, reading an account by someone who actually tried using it, it seems that it has satellite tuners... but perhaps no other capabilities in point of bringing in signal, I'm sorry to say.
This is a satellite-intended DVR.
It can also 'do' Blu-Ray discs.
And the most promising mode for your purposes would be to connect it to a TV with an HDMI cable - provided it was a certain sort of TV, not just any. Particularly recommended is Panasonic Viera.
But mention of tuning cable TV or the like, there is none in the manual. Or casual reviews of it.
Try going to the Function menu display, for access to features of this device.
to see an overview of this device's capabilities.
I have found no indication of a hard reset for this device.
I am sorry to say, I found no way to exit the Search / Scan mode that looks for a satellite-originated signal source.
I have Opted Out, opening the case to other Experts, in case one of them can contribute.
I would like to have a phone discussion with you later today.