[pavel-s]

Originally Posted by MrTick

Personally I recommend this write-up regarding 5.6.5 jailbreak:
https://github.com/sgayou/kindle-5.6.../doc/README.md
It summarizes the jailbreak back in times when it was easy

Thanks a lot for the link! It's very inspiring and teaches how to think and which mindset you should have in order to make a jailbreak effectively. Must read for a quick start.

And yeah, exploiting the browser/java may be much easier than looking at BT implementation (my mistake).