Hi.

This one comes up all the time here.  From what I have seen of the answers...... you can do this ONLY if you can get the original model file that the developer used to make the model.  And have the same development environment available to you.  SO in most cases.... the answer is "no".

Chack around in the old posts.... you'll see a lot pertaining to this very question.

Sorry to be the bearer of bad news.

best,

.................john