I'm not sure if this level of detail is going to make things clearer or not for you - I'll let you be the judge:
There are 4 tuners for the aerial . This is a hardware thing - the device is physically capable of tuning to 4 different frequencies at the same time, to consume 4 different DTT streams.
The IP channels don't need tuners - it's all decoding of internet streams. The restriction here is the bandwidth that the box is capable of receiving via the broadband connection. Some connections would be capable of accepting more streams, but e.g. if the box was connected over wifi and the signal wasn't perfect, or there were other people also using the wifi at the same time, then the bandwidth could be limited. This would take a very complicated set of rules to manage, and also could be very confusing to the user as to why sometimes recordings worked, and sometimes they didn't. Thus it's limited to 2.
But, I don’t understand why one has to choose either IP or aerial mode and why you have to factory reset to change between them. It’s very unclear.
Choosing aerial mode or IP mode is to make things simpler - otherwise there'd be 2 of most channels (one delivered via IP, one via aerial). In an ideal world. all Freeview channels would be available via IP, but we're limited to the channels that will allow us to broadcast their content over IP, and also limited to the amount of bandwidth that we can dedicate to these channels.
Factory resetting is required as switching between this modes changes the fundamental operation of the box - it theoretically could have been possible to allow the switch back and forth, but the code required to support that would have been very complicated for a scenario that users would normally only do once. It is possible to use maintenance mode to reset the box and still keep existing recordings, but some of those recordings would fail to play as the content encryption on them would fail (e.g. if you recorded a programme in IP mode and switched to aerial mode, the box would no longer have the decryption key for the IP stream).
With the Pro box you can record two programmes, but you can’t watch a third. If you have two programmes set to record on, say BBC1 & BBC2, and you’re watching ITV a message comes up to tell you that if you want to continue watching ITV you have to cancel one of your recordings.
This is correct if in IP mode, or when in aerial mode and recording 2 IP channels whilst trying to watch a 3rd IP channel.
We certainly need @DarrenDev to clear this up because I asked about aerial v EE TV modes before I set up the box and it seemed clear that I should go for EE TV if I wanted the EE channels. Possibly that was wrong.
Sorry, I don't understand this bit.
