Have the latest version of the FusionSolar app installed on your smartphone. Why Update Your SUN2000-6KTL-M1 Firmware?
The firmware of the is the digital brain of your solar storage system. Whether you are a homeowner relying on the convenience of the FusionSolar app or a technical installer preferring a direct USB connection, keeping this software current ensures your investment in solar energy remains efficient and safe.
: Many users update firmware specifically to enable or stabilize Modbus-TCP
As of mid-2024, the firmware for the M1 series (Three-Phase) typically follows the naming convention. sun2000-6ktl-m1 firmware
The "C" and "SPC" denote customer and service pack builds. Always refer to Huawei’s official release notes.
Go to Maintenance > Upgrade Device . Select the inverter and follow the prompts to begin the upgrade.
[Download Firmware Package to Phone] │ ▼ [Connect Phone to Inverter Local Wi-Fi] │ ▼ [Open FusionSolar App ──> Device Commissioning] │ ▼ [Maintenance ──> Upgrade ──> Select Package] │ ▼ [Execute Flash ──> Automatic System Reboot] Have the latest version of the FusionSolar app
: Improved load tracking and power scheduling in third-party dispatch modes.
Ensure both DC (solar panels/battery) and AC (grid) power sources remain active and stable during the process. Never flip the DC switch off while the update is running.
: Protects your system’s Wi-Fi or FE Dongle against evolving cybersecurity threats. Whether you are a homeowner relying on the
Firmware can be updated locally via a mobile device or remotely through the Huawei FusionSolar Portal . This method is used by installers on-site. Series FusionSolar Patch Software Download
The easiest way to perform the upgrade is through the on-site. The app connects directly to the inverter’s internal Wi-Fi access point, allowing you to push the firmware without an active internet connection on the inverter itself. Phase 1: Preparation