SPH Series Firmware Download
SPH 3-6K TL BL UP
Please note that for SPH 3-6K TL BL UP, our factory has produced 2 generation models, but in first generation , we just manufacture dozens of SPH 3-6K TL BL UP. The second generation SPH 3-6K TL BL UP is different from first generation, especially firmware can’t be used each other. Once you upgrade wrong firmware, inverter can’t work normally. Please highlight this.
Second generation SPH 3-6K TL BL UP Firmware
SPH 3-6K Standard Inverter Firmware
