Originally Posted by em534
ps: there absolutely no way I can return it.
Demo mode sounds suspicious, as in possibly a store demo model. Since you say it can't be returned, I suspect the sale was a private transaction and not through a retail store. The problem with private sales is that you have no idea if the seller legitimately owned the Kindle. You also don't know the history of that Kindle and whether or not Amazon has blacklisted it.
But this is all conjecture since you didn't reveal where you obtained the Kindle.