Hi Marty,
IMO
Bernie is correct,

The upgrade was mainly for the SD Card accuracy, in that the % of used space remaining is inaccurate on the keyboard display. The update supposedly fixed that and other minor tweeks, that do very little.

Bud is also correct
No need to upgrade.

Check the capacity remaining on the SD Card on your computer for an accurate account.

Insert card into computer, right click properties, similar to checking a floppy drive. It will show used and available space on your SD Card.

SeeYa,
Larry Hawk