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Troubleshooting and Maintenance
11.2.2 Upgrading Firmware
Upgrade precautions
WARNING!
• If the DSP and ARM firmware need to be upgraded, please note that ARM firmware
must be upgraded first, then DSP firmware!
• Please make sure that the category format is correct, do not modify the firmware file
name. Otherwise, the inverter may not work!
WARNING!
• For the inverter, ensure that the PV input voltage is greater than 180V (upgrade on
sunny days), the battery SoC is greater than 20% or the battery input voltage is greater
than 180V. Otherwise, it may cause serious failure during the upgrade process!
CAUTION!
• If the ARM firmware upgrade fails or stops, please do not unplug the U disk power off
the inverter and restart it. Then repeat the upgrade steps.
CAUTION!
• If the DSP firmware upgrade fails or stops, please check whether the power is off. If it
is normal, plug in the U disk again and repeat the upgrading process. If the power is
off, try restoring power and then repeat the upgrading process.
Upgrade preparation
• Please check the inverter version and prepare a U disk (USB 2.0/3.0) and personal
computer before upgrading. Please make sure that the size of the U disk is smaller
than 32G, and the format is FAT 16 or FAT 32.
• Please contact our service support to obtain the firmware, and store the firmware
in the U disk according to the following path.
»
For ARM file: update\ARM\323101047300_IES_3P_ARM_V003.04_0729.usb
»
For DSP file: update\DSP\323101047200_IES_3P_DSP_V005.00_20230801.
usb
NOTICE!
• VX.XX refers to the file version, XX.XX refers to date.
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