Briefing
The commenter flashed the wrong file during an update, then bricked the piano while trying to fix it. Over-the-air updates from Kawai's phone app no longer worked. Before turning to the app, Claude checked whether the piano showed any signs of life.
The account is a reply in the "Ask HN: What was your 'oh shit' moment with GenAI?" thread, posted on 6 June 2026. It is first-hand text with no photos of the piano.
Written by the Boards & Bots curator
“My piano was back to working within an hour.”