had a garmin that I went to update (US only) cuz it'd been a couple years. it told me the update wouldn't fit cuz the memory was full. it gave me choices of Eastern US, Western US, maybe others, but I chose Eastern cuz that's where I would use it at street level more. so I'm thinking it would UPDATE the E US only and leave the rest alone... but NO.O.
oo; get across the Mississippi and it's worthless
so I saw another one cheap at Woot and ordered it. brand new out of box I went to update (think it might have been a refurb) and upon completion, it's FULL again!! but this one tells me I can put an SD card in it. WHA..?!?! could I have done that with the original one? never know I guess; didn't look into it since I had "new" one
bottom line - check to see if your gps will take an SD card if it states it's full or can't take an update for lack of room