In the time I have owned it I have never once updated the firmware on my Yaesu FTM-400XDE, until tonight that is, though this was a bigger job than anticipated given the location of the main unit within the car, however I was able to access the upgrade switch to do the firmware then subsequently update the DSP, I am not sure what changes have been made to the DSP, however the firmware has something called 'Digital Group ID' and 'Digital Personal ID', what purpose these serve I don't actually know, however now at the top of the radio screen there is an extra field with TX and RX ID, along with the repeater shift direction, CTCSS/DCS and clock (I have my 400 in the car therefore have this set to display the voltage instead which is handy if the engine is off).
I am trying to find out the purpose of this new feature, though I cannot seem to find information on it it however I am hoping to speak to the Yaesu representatives at the National Hamfest in 2 weeks time regarding what future improvements are heading towards System Fusion, they may even be able to shed some light on this interesting update.
All that remains for me to do is just keep using the radio.
73 de 2E0EIJ
Less than 18 hours before I go to the National Hamfest as it so happens, I have a photograph of the display as I described
The radio is currently set to AMS as I prefer this, the selected repeater, GB3IR, is an FM-only repeater located about 2 miles away from my current home QTH, I may ask the Yaesu reps at the National Hamfest what the "ID:TXnn/RXnn" means as I have not found any information on it yet, otherwise the radio is working as it ought to ready for the drive to the Hamfest and hopefully also for participation in October's 2-metre FMAC.