New function.
It was told that those type of gps can only read from sd. False.
In the service menu there are a setting: Logging recording (or something similar) that can be set on and off.
It's different from enabling track log in the system menu, track log draw a point on the map every xxx meters. This function records data to the nonvol memory and has limited space for recording.
Log record create a directory on the sd:/Garmin called Logs. Every time you set on the logging software after the power cycling, a subdirectory will be created. The name of this dir will be yyyymmdd_hhmmss. Inside the dir will be created two files: navi.bin and traffic.bin
Those files record all the gps are doing until the function will be set to off. The only space limit is due to the sd card capacity.
I just enabled and disabled the function without moving the bike so not a big log was created. The files opened with a hex editor starts with NAVLog... and TRFLog....
If i remember well the next item in the service menu allow to read the logs.
I will try to create a log during next trip.