Kernel updating in Freedom OS

Hi,
i will flash my OP3 with Freedom OS 1.5.1. Now i see that there is a newer ElementalX kernel. Can i update it without any issues. Which Version should i download
vers. 0.23 for oxy
vers.0.31 for cm

Can anyone help please?

from xda-developers http://ift.tt/2djk14W
via IFTTT