failed to download the pre-trained models

[hezw2016]

hi
when using the get_model.sh, I got the following errors.

--2017-05-05 09:53:42-- https://www.dropbox.com/s/6662qk17kuj0ro4/model_lowlevel.zip
Resolving www.dropbox.com (www.dropbox.com)... 78.16.49.15, 200:2:4e10:310f::
Connecting to www.dropbox.com (www.dropbox.com)|78.16.49.15|:443... failed: Connection refused.
Connecting to www.dropbox.com (www.dropbox.com)|200:2:4e10:310f::|:443... failed: Network is unreachable.
unzip: cannot find or open model_lowlevel.zip, model_lowlevel.zip.zip or model_lowlevel.zip.ZIP.

Could you provide some other ways to download these models. Thanks a lot.