Moodle defaults to saving backup files to moodledata/filedir/.
Nothing in there is humanly readable nor recognizable by a human.
Moodle uses metadata ... the contenthash variable in every row of every file in mdl_files table. So to find a .mbz file in moodledata/filedir one needs to query the DB for all .mbz files.
mysql> select contenthash,filename from mdl_files where filename like '%.mbz';
example of one .mbz file:
| 111b45cb585b7ce3525f1541e4e0462c3d3eedeb | backup-moodle2-course-2-sa-20190821-0853-nu.mbz
Take the contenthash value above and use in a find command to find exact location:
cd /path/to/moodledata/filedir
find ./ -name 111b45cb585b7ce3525f1541e4e0462c3d3eedeb
will show:
./11/1b/111b45cb585b7ce3525f1541e4e0462c3d3eedeb
note 11 is a subdir of moodledata/filedir/. 1b is a subdir of 11 and inside those there is a file named 111b45cb585b7ce3525f1541e4e0462c3d3eedeb
To make sure it's a backup file (a .mbz):
issue a file -b on that file:
[root@server filedir]# file -b ./11/1b/111b45cb585b7ce3525f1541e4e0462c3d3eedeb
will show:
gzip compressed data, from Unix
which is what a .mbz file is ... a gzipped file.
Using FTP will be an adventure.
Have anything else to browse files? cPanel File Manager or other?
BTW, what is 'download manager software'?
'SoS', Ken