Seems a running issue through the years. I am not able anymore to connect the GT3 wheel. Not recognized by Truedrive. Re-install software, checking battery on wheel. Reset everything and try to connect it from scratch. Nothing helps. That used to run perfectly fine. I am not sure if it is related to that specific truedrive version.
No wireless wheel changes in that firmware release.
How did you test the battery? It is difficult to test since even an empty battery will show 3.6 V with a multimeter.