If this failed, it would be crap, but more to the point it would get noticed.
It does fail, it is crap, and it did get noticed.
it also says the box updates the EPG overnight, so you should not turn it off (well obviously!) but specifically not turn it off at night because that is when it does its EPG update.
That's bullshit. It updates the EPG continuously when it is not playing something.
It would be crap software if it did not regularly update the EPG.
It is crap software. It comes from Humax. It has some weird 7 day limit. Who knows how they managed this but they did.
Based on user experiences and troubleshooting for the Humax HDR-FOX T2 (Freeview) and related Foxsat HDR (Freesat) models, a series recording can fail if the device is left on a different channel for a very long time, though this is usually due to signal or EPG update issues rather than a direct punishment for not changing channels.
No, it
is a direct punishment for not changing channels, or playing something back.
EPG Update Failures: The Humax PVR requires regular updates from the broadcasters to keep the Electronic Programme Guide (EPG) accurate. If the box is left on a channel that doesn't carry updated metadata (or no channel at all for a long time), it may not pick up the updated time/channel information for the next episode in a series.
That's complete crap. There are continuous updates. There aren't any channels that don't carry updated metadata, but channels don't carry metadata. It's carried within the overall mux.
Multiplex Limitations: The HDR-FOX T2 has two tuners. If you are recording two things, it cannot tune to a third to update its schedule.
That's bullshit. EPG data is carried on all multplexes.
Leave on a Main Channel: When putting the box into standby, it is recommended to leave it tuned to a major channel (like BBC 1 or ITV).
As I already said, all muxes carry all the data. Some carry it quicker than others, but it's largely irrelevant. A 'major' channels makes no difference, for reasons previously mentioned.
if some TV channels do not carry the EPG
See above.
The Humax should re-tune itself briefly
No it shouldn't (how would it know when?) and it doesn't, for reasons that have already been explained.
So what is needed is a background task which selects a channel with EPG.
All channels have EPG, as above. Perhaps there's a package that does something like this though.
Funny thing: in the morning I keep finding a channel like 250 tuned in, with nothing on it, and I've only just realised this!
We'll leave it for you to work that out then.
There has been enough concern over infected printers... (whether this is real, or a subject of somebody's PhD paper, is a different Q 
