What happens if there is a power outage during a UPS firmware upgrade?

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A UPS firmware upgrade cannot be initiated if the UPS is On battery.
If a firmware upgrade is already in progress when the input power is interrupted:

– Once the firmware upgrade was initiated with Output Power Off, the firmware upgrade will complete.

– If the firmware upgrade was initiated with Output Power On, power supply from the UPS to the connected devices will be interrupted, and connected devices will not be shut down gracefully. The firmware upgrade will complete successfully.

See Firmware Upgrade Issues for more information.

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What happens if there is a power outage during a UPS firmware upgrade?

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