How do I get Kindle Fire 2nd Gen OS on Kindle Fire 1st Gen without rooting?

Apr 13, 2014
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So I have a 1st Gen Kindle Fire and a 2nd Gen Kindle released. I knew the OS between 1st gen and 2nd gen were different. I can't afford a 2nd gen kindle. I want to get the OS that runs on 2nd Gen and get it running on my 1st gen kindle.