Hi all again

Im installed old version 5.10 in my gps as you say, but gps was work stranger, sometimes its restarted and when i calculate some routs it was stuck an say that he cant calculate and stop. can you advice me what can i do for my garmin 1350 nuvi its chipset is B0972-00 , and what name I m must give map witch i want to write ??? sorry for English