Theme Horse

Hi Edwin,

Yes you can update only the revolution slider but we have also updated the theme before make sure that you have updated the theme before too.
Below are the update version and change log we have released:

== Change Log ==
= 1.8 =
* Revolution Slider plugin deactivate issue fixed
* Revolution Slider version 4.6.5 included

= 1.7 =
* Revolution Slider version 4.6 included

= 1.6 =
* Revolution Slider version 4.5 included
* Error message in dashboard issue fixed

= 1.5 =
* bbPress compatible

= 1.4 =
* Heading tag changed for post page title for better SEO
* Featured Slider text content display issue fixed
* Theme Option design modified

= 1.3 =
* Update notifier issue fixed
* Custom CSS call priority fixed
* Revolution slider version 4.1.4 included
* Missing strings for translation added
* POT file updated
* Theme Option design fixed with respect to new version of WordPress 3.8

= 1.2 =
* Business Template’s Service Widget Clear issue fixed.
* Read More text change option now also works for Services widget.

= 1.1 =
* Footer Sidebar CSS Fixed
* Slider text position option added
* Gallery image title link removed and footer issue fixed
* Color skin issue on slide title fixed
* Pot File updated

Thank you!