One of the issues for some, was that none of the recent root methods worked on this latest firmware. However, thanks to Japanese developer ?@cubeundcube this is no longer an issue. An update to his rootkitXperia tool kit manages to root the Xperia Z2 without any issues, even for those with locked bootloaders.
If you want to download rootkitXperia head over to ?@cubeundcube’s download link (mirror). Find further information in the XDA links below.
Thanks Fareed!