The new AS4777.2:2020 will supersede the current AS4777.2:2015 on 18th December 2021.

In order for your Delta inverter to comply with this standard there is a minimum firmware requirement listed below;

Model: H5A_222 

DSP Version: 4.50

COMM Version: 2.08

How to update my device to that firmware?

Method 1. DeltaSolar APP – APP2.0(Android) – APP2.0(iOS)

Method 2. Windows Laptop – Process HERE

 Model: BX6.3 AC

DSP Version: TBA

COMM Version: TBA

Model: H8E/H10E

DSP Version: TBA

COMM Version: TBA

Model: M30A_230

DSP Version: TBA

COMM Version: TBA