With a bunch of custom ROM options out there, it can be hard to settle on just one — but you should really consider OmniROM.
Why flash? Slimkat, from Slimroms offers a compelling answer.
Most of us know Heartbleed as a bug that affected websites and web servers, but Android 4.1.1 also uses the vulnerable version of OpenSSL. This means some Android smartphone and tablets are vulnerable to Heartbleed attacks.
The first generation Kindle Fire is now three years old, and while it remains a great tablet, it lags behind newer models. So why not refresh it by flashing a standard Android ROM?