LG DP122 Service Manual page 7

7) Burn the changed file into disc.
8) Open tray, insert disc and close tray.
9) The below picture will appears on the screen.
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10) Tray will open automatically. Take off the disc and press PLAY to upgrade.
11) After download process completed. DVD player will turn-off and turn on automatically.
12) Do it again the process 1, 2, 3, 4 to confirm the version.
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