go to website… select serial monitor button… connect device to usb should show as a com port select and see if you are recieving log data… if so you do not need to update firmware… it is running in meshtastic mode
if so you should go to your phone and go to bluetooth and if the device has paired… delete or forget device and re-pair password is 123456 or if it is not set youy will have to look at the serial monitor log and it will tell you the bluetooth random generated pair key
in the future you may want to try to upgrade firmware… but this is not necessary at this time