SenseCap T1000 geolocalization issue after firmware upgrade

Dear all,
Few days ago, I managed to setup up a T1000 to work with the thing network + mapper, with GNSS only geolocation.
Yesterday, I have updated the unit with the new firmware and the problems have started. I kept using the device without any change in the setup and despite the unit is communicating with the network, it provides wrong localization, or more properly it is communicating location with many hours of delay.

Somebody could help me?