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The model number of my new TV is not recognised and it is impossible to get make any headway. Why can’t Sony identify the TV which I bought at a John Lewis store? It was delivered on 22 February 2020.
Try without the "-"... For example: KD49XG8305
I HAVE EXACTLY THE SAME PROBLEM - SONY DOESN'T RECOGNISE ANY COMBINATION FOR THE KD-49XG8305. SO I CAN'T REGISTER OR HAVE TO REGISTER UNDER A DIFFERENT MODEL NUMBER!
This could be the reason. Anyway registering it doesn't add up anything to your tv...