Yamaha Clavinova CLP-635 Firmware Update Manual page 4

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How to confirm the installed firmware version
1. Turn on the instrument.
2. Press the [FUNCTION] button several times to select "System" menu.
3. Press [∨] button several times to select "Utility", and then press [＞] button.
4. Press [∨] button several times to select "Version", and then press [＞] button.
5. Check the displayed version number.
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