DSP Update Procedure

  1. Prepare USB Stick

    • Place 20862API.bin and 20862APP.bin files on a USB stick, ensuring 20862APP.bin is named correctly and not in a folder or zipped.
    • Ensure no other files are on the USB stick.

  2. Connect Firmware Update Tool

    • Insert USB into the Firmware Update Tool and connect to the inverter's 4-pin green port.
    • The tool should light up red and green.

  3. Inverter Settings

    • On the inverter display, go to Advanced Settings, enter password 0010, select "Turn Grid On/Off," and turn it OFF.
    • Return to Advanced Settings, enter the password again, and select DSP Update. Verify the current version.

  4. Initiate DSP Update

    • Select Enter on DSP Update. The green light on the tool should start flashing.
    • Press the button on the Firmware Update Tool to begin the update. Watch for the green light to flash rapidly, then slowly.

  5. Completion

    • When the green and red lights turn solid, the update is complete.
    • If the green light goes dark and then reappears after 4–5 seconds, the update was successful.
    • Verify the version change after the inverter’s LCD operation light stops blinking.

  6. Turn Grid Back On

    • In Advanced Settings, enter password 0010, select "Turn Grid On/Off," and turn it ON if production is ready.

HMI Update Procedure

  1. Prepare USB Stick

    • Place the HMI.bin or HMI_WIFI.bin file on a USB stick, ensuring it is named correctly and not zipped.

  2. Connect Firmware Update Tool

    • Insert the USB into the Firmware Update Tool and connect it to the inverter’s 4-pin Green Port. The tool should light up red and green.

  3. Inverter Settings

    • On the inverter display, go to Advanced Settings, enter password 0010, and turn the grid OFF.
    • Go back to Advanced Settings, enter password again, select HMI Update, and ensure no communication cables are connected, with the address set to 1.

  4. Initiate HMI Update

    • Hold the button on the Firmware Update Tool until all lights are lit, then release.
    • In Advanced Settings, select HMI Update and enter Update Mode. The screen will go blank, and the green light should flash.
    • Press the Firmware Update Tool button to start the update, verifying that the green light flashes quickly, then slowly.

  5. Completion

    • When the green light is solid, the update is complete.
    • If the green light briefly turns off and then reappears after 4–5 seconds, the update was successful.
    • Confirm the version change once the inverter LCD stops blinking.

  6. Turn Grid Back On

    • In Advanced Settings, enter password 0010, select "Turn Grid On/Off," and turn it ON if ready to resume production.

This summary captures the essential steps for updating DSP and HMI firmware on a Solis on-grid inverter. Following these instructions ensures the device remains updated and ready for optimal operation.