SviCloud TV Box cannot boot, stuck with wallpaper and no GUI

I have a SviCloud TV Box. The box boots up to be stuck on the loading screen. It kept going "copy/write template file". I went to recovery and erased data/cache/reset/reboot. Great, it passes that point and even goes through all the initial setup steps, but afterward, it's stuck with wallpaper and no GUI. I'm guessing something in the OS broke, now it's not loading the launcher or something. It's not the first time something like this happened, the last time I had to bring my box back to my seller for repair. So now I'm thinking, is there a way, for the future, that I can rip out the firmware from the box? Either whatever the box has as is (NAND copy?), or maybe rip out any OTA downloaded firmware. Which then I can use the image to reflash my box (which I figured should fix most of the problem unless it's a flash memory chip going bad). Any pointers would be appreciated.