RICOH THETA Factory Reset Using API

I’M FROM BRAZIL, AND I HAVE A PROBLEM IN MY NEW THETA V, I CAN’T SEE A VERY BIG FILE (5 GB) TO DELETE, (WHEN I RECORD A VIDEO, I HAVE DISCHARGED BATTERY.) I TRY TO DELETE IN ANDROID, WINDOWS AND IN MAC OS, BUT WAS NO POSSIBLE.
HELP ME TO ERASE A GHOST HIDDEN FILE INSIDE A RICOH THETA V. WHEN I WAS RECORDING A VIDEO THE BATTERY WAS ENDED AND THE FILE DENIED AND IT WAS INVISIBLE TO BE ERASED… ANYBODY TO HELP ME PLEASE ?
HELP%20ME