Sega TARGET BRAVO OPERATION GHOST Owner's Manual page 123

Manual Recovery
Use the following procedure to return the RINGWIDE system software to a previous state.
1
Press the TEST and SERVICE Buttons simultaneously with the RINGWIDE power off.
Hold the buttons down and turn on the power.
2
After RINGWIDE starts up and the following message is displayed, release the buttons.
16
The system software will recover automatically. The Advertising screen will be displayed once everything finishes.
Until it is displayed, do not interfere with the cabinet's operations.
(If you are uninstalling a game, the Install Wait screen will be displayed.)
SYSTEM UPDATE
STEP1
DO NOT TURN OFF THE POWER
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