Topic: damaged record

[tournevase]

hello
rickie told me to post here for the followin problem
i use an helix 10x chirp megasi + gps g4n
i was performing a record when the sonar shutdown suddenly
a record exists on the sd card but the file .dat is empty.
the files B001, 2, 3, 4.son are not empty
i can replay the data on the helix
is there a way to restore the record ?
only B001.son is needed