I have bought a couple of motherboards for an old Kindle and both are registered to Kindle and I cannot unlock them. I am using Windows 10 and cannot see how to back books up to my hard drive and then transfer onto the ereader via USB, only route I can imagine as the ereader cannot be recognized by Amazon because they deregister these motherboards. I know, I know I should just buy a new ereader but I like the keyboard version even if the micro USB breaks !! any help muchly appreciated
