Question Regarding Jelly Bean 4.2.2 to KitKat 4.4 Upgrade on RCA Tablet

Dec 7, 2013
Hi, I just recently purchased a brand new 7" RCA Tablet that came with Android OS version 4.2.2 Jelly Bean. I was wondering how would i go about upgrading this 4.2.2 version to the latest 4.4 KitKat? I've heard that either it will work or the device could become useless. Not experienced with flashing roms or root either. The main reason for the upgrade is for the better battery usage in KitKat compared to the poor battery usage in Jelly Bean. Can anybody confirm this by any chance and thanks in advance.