D439E Service Manual 5. Service Tool
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6. Select at the bottom of the upgrade proceeding window, then following message will be
shown.
<Figure 19: ECU Manual Upgrade – STEP 5>
CAUTION
<Figure 20: Low Voltage>
The pop up screen warns low voltage of battery prompted in the STEP 5 battery voltage check level.
To follow the instruction given before proceeding the ECU upgrade.
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