Originally Posted by dimi5
No, just bought it as a media consumption device (I have also a nexus 4). I mean once I saw sources of xposed app and was curious whether there some feature request or whether there are similar dev projects for kindle.
I am not a developer by any means. I am a mechanical engineer, hence I hate not being able to fix or change anything MYSELF. I am 99% certain the bootloader can indeed be unlocked based on several vulnerabilities that I have confirmed are indeed presently exploitable. However, I lack the ability to easily take this info & compile an exploit for the device. Currently I am awaiting some feedback from a couple of the heavy hitters that are too busy to spend much time on the HDX, but have been pretty willing to help me limp along.
At any rate, since you have some C/++ experience alongside java, you should have a leg up. A lot of the kernel is in C & binary (modules, etc) code is C or C++ & there are some great tutorials on building apps based on some of Google's offerings. Start small, compile the Hello World app & then expand from there. Browse thru source code & try to compile a kernel. It won't do you any good on the HDX yet, but it will help to identify exploits, patches & functions & intents that you will find useful down the road.