One day something happened and all my books were gone. It's been sitting there since. I'm hoping one day I'll use it for a project and be able to flash a differ

One day something happened and all my books were gone. It's been sitting there since. I'm hoping one day I'll use it for a project and be able to flash a different os or harvest the e-ink display. I wonder how hard it is to DIY your own reader? https://www.waveshare.com/epaper https://www.waveshare.com/epaper