I got unreadable characters from gps. Mby someone know format or how to make it readable. I think it is ASCII. But I dont know. Some data here: https://www.dropbox.com/s/3f6j13mkphp6ti9/rawData.txt?dl=0 Screenshot: http://prntscr.com/4qwq54
Definitely looks like some internal encoding. You would need to know how it is created to know how to decode/decrypt it. More information would be nice.