The process for replacing Sky Q products when the HD has issues is superb! It’s been causing a problem for months (not connecting to the mini box, kept reactivating the network and main box connections, kept trying to update software when it was already done) but was desperately bad over the weekend (couldn't watch recordings, couldn't record or download, couldn't connect to mini box at all). I went through the help pages, reset the HD with no improvements so I requested a new productwhich arrived within 13 hours! Incredible! I thought there was a further issue with my mini box but replacing the main box has fixed things. Thank you!