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: Periodic releases patch network vulnerabilities within the built-in Wi-Fi and Fast Ethernet setups. 2. Prerequisites Before Upgrading
Ensure the Wi-Fi connection between the phone and the inverter is stable. Try sitting closer to the inverter.
Go to Maintenance > Upgrade Device . Select the inverter and follow the prompts to begin the upgrade.
Firmware versions are typically formatted as VxxxRxxxCxxSPCxxx (e.g., V100R001C00SPC160 ). The most common main version identifier for the SUN2000-6KTL-M1 is V100R001 .
Older firmware versions were notoriously "picky." They required strict handshake protocols with the Huawei Luna2000 battery BMS (Battery Management System).
: Do not disconnect the AC isolator or turn off the DC switch during the update process.