The step to upgrade firmware on DSO4084C:
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1. Copy the firmware file to a USB flash disk
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2. Power on DSO4084C
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3. Instert USB flash disk to the USB interface at bottom of the LCD
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4. Press Utility button
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5. Press down arrow button near the right down corner of the LCD
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to turn page to 2/3
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6. Press Update (F1) softkey
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7. Press Update Firmware (F1) softkey
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8. Turn VO knob at the left up corner of the panel to select the firmware file on USB flash disk
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9. Push VO knob to confirm your file selection
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10. Then press Start updating (F3) softkey to start update.
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