How to update the firmware on a multi inverter system

For Muli inverter systems to update successfully the system must have internet connection throughout the update so all inverters can get updated. 

If the inverters supply power to the Wi-Fi then there can be a break in connection during the update.

• Bypass the inverter and supply the Wi-Fi directly from Grid or alternative supply
  • If grid is not available or unstable make use of a generator to power the Wi-Fi.
  • if no generator is available and you have to power the internet connection from the inverter then please update inverters one by one.
• Turn off the Solar DC switches of all the inverters.
• Turn off all the LOAD port outputs off on the inverters so that they run isolated from each other.
• Make sure the generator has enough fuel to stay on for the duration of the update.
• Make sure the inverters have enough battery capacity to complete the update process.
• Request the firmware update on the Sunsynk Firmware update Whatsapp group shared by your supplier.
  • Specify on the group that this is a parallel system and send all gateway and serial number of the parallel system together.
• Monitor the update by following the green circle in the top left corner of home screen.
  • Wait for all updates to complete.
  • Confirm that all the inverters of you parallel system now have the same firmware, both MCU and COMM must be the same.
• Factory reset and restart all the inverters.
• Setup the parallel communications for every individual machine again and verify all other settings.
• Startup and check that all the inverters in the system communicates in parallel again.
• Shut down all inverters.
• Connect LOAD port as before.
• Startup and do final testing.