An fvi file extension is related to the DatABEL software. An fvi file contain package index.
FVI file extension - DatABEL package index
What is fvi file? How to open fvi files?
File type specification:
The fvi file extension is associated with the DatABEL software. The fvi file contains package index.
Seems to be very rare used or obsolete software / format without support from developer.
This fvi file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.