Follow the code below:
<div class="file-caption-name">
<i class="glyphicon glyphicon-file kv-caption-icon"></i>
Alterar texto aqui
</div>
I've tried it this way:
$('div.file-caption-name i').text('your new title');
The result looks like this:
<div class="file-caption-name">
<i class="glyphicon glyphicon-file kv-caption-icon">your new title</i>
Alterar texto aqui
</div>