If that photo is the same model as the computer you want to reset, that is a K4 (kindle mini).
I tried creating a special RUNME.sh script for you to use that would do this for you, but I ended up "soft bricking" my K4 (I can still boot it, but only by using the MfgTool program from the "Select Boot" thread in the "Kindle Developer's Corner" forum. I need to fix that first. These things are very touchy and much too easy to brick. Thankfully *somebody* put together some tools and instructions making it "relatively" easy to debrick them, which you can find in the "simple debricking" and "select boot" threads on the developer's forum.
Anyway, I will try to get you a tool to do this. The "shipping_mode" script on the main boot partition fails with "missing whitelist files" errors. It looks like you can only use it to set shipping mode ONE TIME, after which it deletes stuff it needs.
However, I am sure there is some way to do it, if we can just put in enough research to figure it out.
You *could* save that "shipping mode" image as the only screensaver image, if you want to "fake" it.
