I talked to a dealer about this very same issue yesterday.
He sent me instructions and pic on how to do it. Its very simple (< 5mins by a novice)- open the back panel, unplug the wire from the 110V input into 220V input. No soldering, no screws, nothing.
Just a simple unplug from a tiny 110v 'socket' and plug into the 230V socket.
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