[Q] New to Android (Coby Kyros 8120) topic

I was given a Coby Kyros 8120. It has Android version 2.3.3 on it I would like to upgrade to 4.3.

I am asking for instructions on how to backup what I already have on the system for a fall back, also how to move forward with setting up android 4.3 on this system. Please remember as I stated earlier, I am new to Android.

Thanks