Quote:
Originally Posted by shalym
I don't know for sure, but it may also make it easier and quicker for Amazon to know that you've deleted it if you do it from the device, rather than by plugging it into your computer and doing it from there.
Shari
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The device has to sync up with the Amazon servers to reflect any changes made to the device. This isn't always an instant thing. Deleting a book from the device, using the device menus to do so, is the best way in this scenario. Removing books using a computer's file management system causes problems, because the Kindle itself won't recognize the change in storage space. I imagine, but don't know for sure, that this would also create problems when attempting to sync with Amazon servers.
I've used Kindles since 2009, and I've never had to remove/deregister a device in order to free up a book simultaneous license. Delete using the device menus, sync, and wait a few minutes, has worked each time.
I do know some users report needing to contact Amazon to get this to work correctly, at least some of the time. That is sometimes the case for users with spotty WiFi. In those cases, the Amazon CS person was able to take care of it right then, and the book was freed to be downloaded to another device.
I liberate almost all of my books from DRM now and store them in Calibre, so this is no longer an issue for me. Bumping into the simultaneous license restriction has only happened to me a few times, with reference type books. At last count, I had 10-12 devices registered to my account.