If it's resetting to default without you doing owt, it must be faulty
You could try calling the BTIndia division - 08001114567 - advising them that it keeps doing this.
Hopefully after talking for x mins/hours, they'll hopefully send a replacement
Yeah that's precisely what is happening, getting random lock ups and resets itself to factory defaults so I have to keep reloading the saved backup to it.
Time to explain this to BT India yay!
Called... explained... they ordered a new HH2 for me which was quite painless so hopefully this one will be more reliable.