If it's working and you're not having issues leave it alone.
It doesn't update automatically, you need to download and install. SGP might help, you'd likely be better searching for LV6548 update info.
Have you selected the correct battery designation ? If you are using SunGold batteries they have to be set to pylon. User is actually better settings for control in my opinion you can better tweak the charge parameters to suite your needs
This is exactly why I'm looking to update the firmware on my pair of SP6548's. I just (today) upgraded from FLA batteries to the EG4 PowerPros. Settings all seem to be right, but BMS is not communicating with the inverter...ergo, the dreaded error 61.