How to add missing Entypo icons for Icon List or Icon Box (Enfold Theme)

I would like to use some of the icons that are in the Entypo font, but not included in the Theme. (For ex: 🔿 = paper airplane)

The missing icons are included in entypo-fontello-charmap-unmod.php, but commented out. I tried (1.) renaming “…charmap-unmod.php” to “…charmap.php” and un-commenting the missing icons; AND (2.) replacing the 4 entypo-fontello font files (.eot, .svg, .ttf, .woff) with 4 fresh files, downloaded from entypo.com (which are version 2, and should have the full character set). I re-named these font files from “entypo.woff” to “entypo-fontello.woff (etc.) to match the theme’s code.

This did not work. The missing icons did not show an icon in the shortcode & layout editors, though they did show a little box with tiny letters in it, just not the proper icon. When I tried selecting that, I only got the little box – not the proper icon. (All the original icons still showed up fine — but the missing ones just added little boxes.)

I tried just using plain HTML like this:

http://pastie.org/8181865

But the HTML didn’t work either

— Firefox did not show the proper icon, only the missing-icon box with tiny letters

— Chrome showed the proper icons, but ALL the entypo icons became very tiny — even the search-form icon.

Is there a simple way of un-commenting all the missing icons from entypo-fontello-charmap-unmod.php, and getting access to the full character set of Entypo?

I am using a Child Theme, so I’d prefer to make changes via the Child Theme’s css, function.php, or template files like header.php, if possible.