June 30, 2021: corrupted file on a Garmin GPS watch (Forerunner 35)

I use Turtle Sport as software to fetch GPS data on my watch. It works nicely but today I have experienced a problem when clicking on the icon to fetch sport activities on the watch

Indeed the hour glass "turns forever" instead of listing the activities on the watch. Starting Turtle Sport in a console allows to know more about that:

fr.turtlesport.UsbProtocolException: Couldn’t detect a GPS       device.
        at fr.turtlesport.UsbProtocol.init(Native Method)
        at fr.turtlesport.device.garmin.GarminUsbDevice.<init>(GarminUsbDevice.java:46)
        at fr.turtlesport.device.garmin.GarminUsbDevice.init(GarminUsbDevice.java:77)
        at fr.turtlesport.device.garmin.GarminDevices.list(GarminDevices.java:33)
        at fr.turtlesport.device.Devices.list(Devices.java:25)
        at fr.turtlesport.ui.swing.MainGui$RetreiveAction$1.construct(MainGui.java:1604)
        at fr.turtlesport.ui.swing.SwingWorker$2.run(SwingWorker.java:108)
        at java.lang.Thread.run(Thread.java:748)
Exception in thread "Thread-5" com.garmin.fit.FitRuntimeException: FIT decode error: Endian 59 not supported. Error at byte: 14528
        at com.garmin.fit.Decode.read(Decode.java:762)
        at com.garmin.fit.Decode.resume(Decode.java:365)
        at com.garmin.fit.Decode.read(Decode.java:344)
        at com.garmin.fit.Decode.read(Decode.java:339)
        at fr.turtlesport.geo.garmin.fit.FitFile.retreiveDate(FitFile.java:111)
        at fr.turtlesport.device.garmin.GarminFitDevice.isFitAlreadyImport(GarminFitDevice.java:135)
        at fr.turtlesport.device.garmin.GarminFitDevice.getNewFitFiles(GarminFitDevice.java:109)
        at fr.turtlesport.device.garmin.GarminFitDevice.getNewFiles(GarminFitDevice.java:49)
        at fr.turtlesport.ui.swing.MainGui$RetreiveAction$1.construct(MainGui.java:1630)
        at fr.turtlesport.ui.swing.SwingWorker$2.run(SwingWorker.java:108)
        at java.lang.Thread.run(Thread.java:748)

To solve this problem I have found the corrupted activity file (ending with a ".FIT" extension in the "ACTIVITY" directory at the root of the watch file system) by a trial-and-error procedure: restart Turtle Sport after moving one of them at a safe place, one after the other until it works correctly:

$ cd /run/media/jscordi/GARMIN/GARMIN/ACTIVITY
$ ls -l
total 479K
-rw-r--r-- 1 jscordi users  12K 2021-06-23 20:19 B6NI0340.FIT
-rw-r--r-- 1 jscordi users 162K 2021-06-25 20:20 B6PG1307.FIT
-rw-r--r-- 1 jscordi users  59K 2021-06-28 20:57 B6SI1521.FIT
-rw-r--r-- 1 jscordi users  70K 2021-06-29 21:27 B6TI3511.FIT
-rw-r--r-- 1 jscordi users 178K 2021-06-30 17:47 B6UD2720.FIT

One of these files was corrupted; I just removed it to solve the problem; of course the data inside was lost, I have not tried to repair it.

Perusal, Synthesis, Bliss

June 30, 2021: corrupted file on a Garmin GPS watch (Forerunner 35)