JUST POWER ON 63
8. System Maintenance
8.1 USB Firmware Upgrade
The EP800 inverter supports firmware upgrades via a USB drive to optimize its
performance and avoid failures caused by firmware errors.
Step 1: Connect the USB drive to a USB port on your computer.
Step 2: Download the upgrade file*, unzip and store it on the USB drive.
Step 3: Connect the USB drive to the USB port on EP800.
Step 4: Power on EP800.
Step 5: The firmware upgrade starts automatically once the upgrade files are
detected.
Step 6: The buzzer beeps after the firmware is updated successfully. Please unplug
the USB drive, or EP800 will report a USB Format Error.
Step 7: Pair EP800 with BLUETTI App, then you can check the current firmware
version. If any of the following occurs, please try the solutions provided. If the
symptom persists after 5 attempts, contact the BLUETTI support team.
* Please contact our company for further assistance.
8.2 OTA Firmware Upgrade
The EP800 also supports OTA firmware upgrade. For details, please refer to the
“Upgrade” section within the “Basic Settings” of the EP800 Home Energy Storage
System BLUETTI App User Manual.
Error Description
USB Upgrade Failed. Please contact the BLUETTI support team.
1.Make sure the USB is formatted as FAT32 with no
more than 32G in size.
2.Check if the upgrade files exist or expire. Please
download the latest upgrade files.
Please download the latest upgrade files. If the
symptom persists, contact the BLUETTI support team.
USB Format Error
Firmware version not
updating or abnormal.
Troubleshooting
Table 8-1
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