I export activity_12345.tcx from Garmin Connect an save it in the folder "courses" on my EDGE 705. When i look at my EDGE it appears a very strange name of my course like YYÖYYÖÖYÖY and there are no data. Do i something wrong?
Ahhh, I understand now what you are doing. The export option is giving you a history file not a course file--it is confusing because they have the same file extension of .tcx. You cannot place a history file in your courses directory of the 705.
So you have a few options. You can use the send to device option. You can export the history file and use a 3rd party app to convert the history file to a course file. You can export the history file, import into GTC, and then create a course from the history file in GTC to send to your device.