Mfsutils
From TiVoDatabase
mfsutils is a set of tools which can extract assets from TiVo MFS partitions. You can download the tools by checking out the CVS repository with this command.
cvs -z3 -d:pserver:[email protected]:/cvsroot/mfs-utils co -P mfs-utils
For information on how to dump assets with mfsutils, you can view this tutorial.