This is a hardware fault. You can get the error message when you update the firmware, but restarting the Uniti 2 should clear it. You probably will need to send it for repair once the CV pandemic is over, but as you can’t do that for a few weeks, you might try a factory reset, which you do via the remote control and the spanner or wrench button.If that doesn’t work then, then you could try to reinstall the firmware, but there is no problem with the latest 4.7 firmware so do that one again.BestDavid