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Upgrading the Inverter
USB flash drives of SanDisk, Netac, and Kingston are recommended. Other brands may be incompatible.
- Download the required software upgrade package from the technical support website.
- Decompress the upgrade package and copy all files to the root directory of the USB flash drive.
Do not modify the content in the upgrade package because the files involve RSA signature verification. If you modify the content, the upgrade will fail.
- Connect the USB flash drive to the USB port. The system automatically identifies the USB flash drive and executes all commands specified in the boot script file. View the LED indicator to determine the operating status.Table 7-1 LED indicator description
LED Indicator
Status
Meaning
Green off
There is no operation with a USB flash drive.
Blinking green slowly
There is an operation with a USB flash drive.
Blinking green fast
An operation with a USB flash drive has failed.
Steady green
An operation with a USB flash drive is successful.
- The system automatically restarts when the upgrade is completed. All LED indicators are off during the restart. After the restart, the indicator is blinking green slowly for 1 minute and then it becomes steady green, which indicates that the upgrade is successful.
