Inverter Firmware update

I have a Gen 2 5kW inverter that does not "see" import/export data. Installer just tried replacing the meter and also the cable back to the inverter and the issue persists. We did have a tech support ticket open to have a GE engineer visit, but clear this will not happen!
My question, should I risk updating the inverter firmware to D0.318-A0.318? Could the update solve the issue?
Any ideas, feedback really appreciated!
If there are any ex GE engineers reading this please do get in touch directly!

Is the Grid meter on - home controls:

tmike the meter display should cycle between various readings. If that shows import/export then the problem is between that and the inverter. Else the problem is between CT clamp and meter. (I'm assuming one of the displays is import/export...)

Wouldn't have thought firmware would make a difference..?

Really appreciate the replies!
I don't recognise the screen shot, where does the Home Controls data be found?
I can get to the GE website details, but for the moment struggling to get the app to work, using iOS

tmike It's an android app
https://play.google.com/store/apps/details?id=uk.rubikcube.invertermonitor

I wouldn't worry too much because I think it is very unlikely that the grid meter has been turned off in software. In any event your installer should have checked the setting before replacing the meter.

The most likely explanation is that your inverter is broken.