The provided binary is rather old, but still made for the THECUS N5200 which got the same firmware basis as my THECUS N4200PRO. Alternatively linked here.
$ wget http://denness.net/thecus/binaries/vim-thecus.tar $ tar xf vim-thecus.tar
Scp the binary to the box (this requires a shell login)
$ scp vim email@example.com:/raid/data/module/bin
Then login into your shell, and add the module binary path to your environment PATH (I already have a customized bash)
# vim ~/.bashrc export PATH=/raid/data/module/bin:$PATH # source ~/.bashrc # vim ~/.bashrc