hi

i have a nuvi 2545 LMT , today i update the wester europe NT 2013.40
firmware 7.70
i used Garmin Express to update my unit
i was not able to download with GarminMapupdater , i don't know why

so i had to use garmin express , it was amazing fast ,and it told me no enough space on the unit and used my sd
my sd is sandisk ultra 8gb upto 30mbs 200X (i hope it's fast enough ?)

garmin express download firmware and map really very fast and stored lots of file on my SD

now i did find an issue for the first time

now the problem
i start a new route (milan to paris)
city -> i type paris
i get paris,75
ok now
i have routes , I and GO!
i select route
calculation in progress (very slow)
sometime stops at 98% without give me an error and sometime stops give me the error impossible to calculate the route

is a problem of the firmware or because i have files split between my unit and the sd ?

my second question is about the SD
if i want to buy a bigger or more fast SD and used it , can i copy the files inside my 8gb ultra to the new one ?
or garmin used the serial numer of my 8gb to edit some files


thanks