How To Update BMW ICOM A2 or ICOM NEXT Firmware?

BMW ICOM NEXT firmware update instruction, why you need to update icom next firmware? when using the latest ISTA D software to do BMW diagnosis, icom hareware can be detected, but the device doesn't communicate with the vehicle,  can't enter modules reading page, like below picture: What's the solution? The firmware doesn't match with the  latest [...]