Kindle 3.4.2 jailbreak needed

Hi, the 3.X jailbreak for >3.2.1 does not work for the version 3.4.2 released in March 2016 on my Kindle 3 (3gb).
Probably the jailbreak need small adjustment by one of the kindle gurus.
Please could a 3.4.2 compatible jailbreak be released.