I note that EG4 added a new remote option to facilitate the online update of the firmware for the batteries. The firmware for the batteries are avai...

Yes FAAB 2727 for Flexboss 18. I updated without any issues . Did not observe any notable changes in operation of the inverter .

I also share your observation. The option to upload the firmware remotely does not appear to be available for the the normal user. Seems that thi...