Heart rate sensor has stopped working after update to firmware v23.2.

Heart rate sensor has stopped working after update to firmware v23.2. In "Info" it says "BMX: 0.0.0. (!)", "WHR 0.00.00" and "Sensor Hub: 0.01". The watch also doesn’t connect to WiFi anymore, due to "low battery“ error, but the battery is almost 100%. Tried a factory reset but no effect. I guess it is some kind of update error. Does someone know how to fix? Garmin Customer Support in India is asking me to send the watch to New Delhi (I live in Pune, Maharashtra). Thanks.