Gps

First time i started navio+ and connected it to my computer my gps worked perfektly, i got a lock in 3 secounds. Then i tried to callibrate my board and i failed a bit so i pressed “reset to default” in apm’s full parameter list. After that i reconected to mission planner and the gps is no longer working. It says “gps no fix” and showes a totally wrong position in russia. I tried leaving the navio for 30 minutes to let it fix its gps, no change it just showed wrong possition. the gps also sometimes jumpes to random countries.
Is there a parameter i need to fill in to make my gps work?
or is it just an other problem?
Pls help

Ok for some reason evrything just works fine if i use “sudo ArduCopter-quad -C udp:192.168.1.2:14550” instead of “sudo ArduCopter-quad -A udp:192.168.1.2:14550”. I guess my problem is fixed…