Not an answer unfortunately, but another instance of the same problem. West Cornwall switchover started last Weds (8th Jul) & I've "retuned" my DTI 1000 four or five times without picking up digital channels with conventional numbering. If channels are selected as "favourites" they can be re-ordered but their numbers cannot be re-prioritised. Have exchanged this box for a Phillips which is a little newer (& includes digital sound out). I suspect the DTI 1000 may be a little long in the tooth now & considering the prices being asked nowadays it would probably be worth upgrading to a newer generation box.
Ian Perry, West Cornwall, July 2009