If you're a Kindle Fire owner painfully jealous of the new Nexus 7, here's something to make you feel a little better: you can now install Android 4.1 Jelly Bean on your tablet.
Since launch the Fire has been hacked left, right and center, but now developer Hashcode has ported Google's latest mobile OS to the device. There is a very thorough walk-through of how to go about installing it at Liliputing.
Obviously, the usual caveats apply: because you're going to be rooting your device and installing custom software, you need to be confident you can see it through to completion. And be aware that you might brick the device. Also, it's worth pointing out that this first build doesn't support hardware video acceleration, and it can occasionally be difficult to enable Wi-Fi. Still, Hashcode hopes to iron those problems out real soon.
While the install won't turn your Fire into a tablet as good as the Nexus 7—Google's device is faster, has a better display, and is just, well, better—it's a step up from the Gingerbread-based OS it's probably currently running. [XDA Developers via Liliputing]