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Need help fixing potentially corrupted .fit file

Former Member over 5 years ago

Hi, I'm hoping that someone can help.

I ran a 70.3 last Sunday and used the multi-sport mode on my Forerunner 945. The file saved on my watch and I can view the data on the watch itself, but it won't upload to my Garmin Connect account or sync with my iPhone. I think the file might be corrupted.

Can somebody help fix the file so that I can upload the file and all of the data to my Garmin Connect?

I've uploaded the .fit file to the following dropbox link: https://www.dropbox.com/s/smhlil2ar6uv77e/2019-12-08-07-59-23.fit?dl=0

Please help!!!

0 BrightScully over 5 years ago

Well, as you noted, your file is corrupted, using the FIT SDK, the integrity check (-i) doesn't pass:

$ java -jar FitCSVTool.jar -i 2019-12-08-07-59-23.fit
FIT CSV Tool - Protocol 2.0 Profile 20.92 Release
Exception in thread "main" java.lang.RuntimeException: FIT file integrity failure.
       at com.garmin.fit.csv.CSVTool.run(CSVTool.java:173)
       at com.garmin.fit.csv.CSVTool.main(CSVTool.java:332)

Trying to convert it to CSV, of course, it is not possible:

$ java -jar FitCSVTool.jar -b 2019-12-08-07-59-23.fit 20 19-12-08-07-59-23.csv
FIT CSV Tool - Protocol 2.0 Profile 20.92 Release
Exception in thread "main" java.lang.RuntimeException: com.garmin.fit.FitRuntimeException: FIT decode error: Endian 98 not su
pported. Error at byte: 817073
       at com.garmin.fit.csv.CSVTool.run(CSVTool.java:246)
       at com.garmin.fit.csv.CSVTool.main(CSVTool.java:332)
Caused by: com.garmin.fit.FitRuntimeException: FIT decode error: Endian 98 not supported. Error at byte: 817073
       at com.garmin.fit.Decode.read(Decode.java:776)
       at com.garmin.fit.Decode.resume(Decode.java:371)
       at com.garmin.fit.Decode.read(Decode.java:348)
       at com.garmin.fit.csv.CSVTool.run(CSVTool.java:220)
       ... 1 more

Have you try to check the file system of your watch? you need to connect it as USB (Garmin) instead of MTP to your PC in order to check it.

Another solution I tried was to use the following online tool: https://www.fitfiletools.com/#/ctf#view (just drag and drop your file there in order to download a fixed version). The process worked :-D the resulting file is not corrupted, but I don't know if the content is Ok (the tool from Fit SDK can read it and convert it to CSV format with data that seems correct, but you must upload the resulting .fit file to Garmin in order to validate it).

If the previous solution doesn't work a last idea (a complex one) comes to my mind: Use the Fit SDK to write a custom program to try to recover as much as possible of your file, but that requires understanding the FIT format (an ugly one IMHO) and programming skills in C, C++, C# or Java.

0 Former Member over 5 years ago

Former Member

Congratulations with the 70.3

your fit file contained corrupted downloaded hr-data

repaired the fit part with hr-data, the remaining data in your file is original

7007296-fr945-kaput-part19-2019-12-08-07-59-23.zip

happy & safe sporting

0 Former Member over 5 years ago in reply to BrightScully

BrightScully

thank you for the info...learned something new today

happy & safe sporting

0 BrightScully over 5 years ago in reply to Former Member

Good to know the information was useful :-D

Try to check the watch file system in order to be be sure that the problem was not originated there (and to prevent future issues)