ProgressiveRC 4010Duo iCharger - Manual (Page 35)

iCharger Synchronous Balance Charger/Discharger 4010DUO
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⑤ Click the iron " " on the lower right corner, then the upgrade progress bar will appear on the lower left
corner, a tone sounds for upgrade completion when the upgrade progress bar has completed.
Note: 1. Upgrade failed in the case of not power outages, click " " to upgrade again.
2. Upgrade failed in the case of power outages, power up again and press knob, STATUS-2 and
STOP/START-2 buttons at the same time and repeat the above steps to upgrade again.