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					Originally Posted by  Daveoc64
					 
				 
				The updates are free, so there's no reason for the user to not upgrade (outside of cracking the DRM) - not exactly something Amazon would want to enable. 
			
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 It's possible for the user to end up in a situation where they 
can't upgrade - if Amazon makes a smartphone app that requires a newer version of the OS, but their device can't be updated.
On PC/Mac, that holds; phones, not so much I'm afraid.