Solis USB Firmware Upgrade Stick – 4-Pin COM Connector
The Solis USB Firmware Upgrade Stick is a dedicated service accessory designed to perform local firmware updates on compatible Solis inverters using a standard USB flash drive.
Ideal for installations where Wi-Fi or LAN connectivity is unavailable, this upgrade tool connects directly to the inverter's 4-pin COM communication port, allowing installers and technicians to safely update HMI and DSP firmware in the field.
Designed specifically for compatible Solis inverter models, the upgrade stick provides a simple and reliable solution for maintaining inverter performance and accessing the latest firmware releases.
Key Features
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Enables local firmware updates for compatible Solis inverters
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Connects via 4-pin COM communication connector
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Uses a standard USB flash drive
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Ideal for sites without Wi-Fi or LAN connectivity
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Simple plug-and-play firmware update process
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Suitable for HMI and DSP firmware updates
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Genuine Solis inverter service accessory
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Backed by a 2-year warranty
Technical Specifications
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Product Type: USB Firmware Upgrade Stick
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Brand: Solis
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Connection Type: 4-Pin COM Connector
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Firmware Source: USB Flash Drive
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Compatible USB Format: FAT32
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Product Weight: 0.11kg
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Warranty: 2 Years
Compatibility
Compatible with:
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Solis inverters equipped with a 4-pin COM connector
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Local HMI firmware updates
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Local DSP firmware updates
Not compatible with Solis inverter models that do not feature a 4-pin communication connector.
Installation Notes
For successful firmware updates:
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Use an empty USB flash drive
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Format the USB drive to FAT32
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Avoid using USB drives with metal casings, where possible
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Ensure no communication cables are connected during the update
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Verify the inverter address is set to 1
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If both DSP and HMI updates are required, perform the DSP update first, followed by the HMI update
Always use the latest firmware files supplied or approved by Solis.
What's Included
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1 × Solis USB Firmware Upgrade Stick (4-Pin COM Connector)
Ideal Applications
The Solis USB Firmware Upgrade Stick is ideal for:
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Local inverter firmware upgrades
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Solar PV maintenance and servicing
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Commissioning compatible Solis inverters
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Remote installations without network connectivity
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Residential, commercial, and industrial Solis PV systems
Professional Installation Recommended
Firmware updates should be performed by a qualified installer or accredited solar technician. Always follow Solis' official firmware update procedures and use only approved firmware files to ensure safe operation and maintain warranty coverage.
Additional Resources
For detailed firmware update procedures, troubleshooting guidance, and the latest service documentation, please refer to Solis' official support article:
For more information, click here:
https://solis-service.solisinverters.com/en/support/solutions/articles/44002485763-procedure-for-local-hmi-dsp-update
