I wouldn't worry about that at all. Just to be clear: the scangauge still works otherwise, doesn't it?
If I put mine in OBDII mode, it will say (and has always said) 'not ready'. But the realtime telemetry works just fine.
If I remember correctly, the ready/not ready thing is just a quick notification that suggests whether the car is ready to pass smog / inspection / whatever. But my car, even though it's 'not ready', passes with flying colors. That message can pretty much be disregarded.
If I put mine in OBDII mode, it will say (and has always said) 'not ready'. But the realtime telemetry works just fine.
If I remember correctly, the ready/not ready thing is just a quick notification that suggests whether the car is ready to pass smog / inspection / whatever. But my car, even though it's 'not ready', passes with flying colors. That message can pretty much be disregarded.