How to register a used component

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Hi all

Recently acquired a 120 processor/amplifier ex a deceased estate.  I have the serial numbers of the unit and the remote

Upon trying to register, a note appears that this is already registered

Is the any purpose in registering a used component, and if so, how do I go about it

Thanks

The unit may be eligible for the Pro upgrade, recently re-introduced, and also you may be able to transfer the remainder of the original five-year warranty from the previous owner (not sure about that, but no doubt Devialet will be able to confirm one way or the other).