Firmware Update without my permission

I just received message about my Inverter has been updated. Problem is I have battle with installer and I'm sure installer has access to my inverter and maybe he trying do something unauthorised.

I can sympathize. But how about this one:

For context, an observation on a recent G99 inspection was the split-phase 120-0-120 voltage was supplied to the house by the AIO/Gateway upon grid disconnection.
However, I'm assuming my Installer fed this issue back to GE, but the fix was to enable the N-PE Relay, but this change was done remotely and is completely untested on my system. Who knows how it will respond on my next grid failure?!

To add insult to injury, I'm left with:

so unable to export until the DNO have signed off.

I now get the AIO RCD/MCB in the Gateway tripping out.
See thread here: https://community.givenergy.cloud/d/4342-whole-house-backup/59