Sounds like a old box already to me. It's probably time to buy a more contemporary box for running Kodi.
Here some reading material for you: START HERE - Pick the Right Kodi Box (updated August 2017)
I have 2 Shields pal but just want to upgrade this and sell on.
Surely there is an image out there I can put on this.It was not a cheap box.Be a shame to bin it.