Opus media direct passthrough on asterisk v 1.8.6

i need to use opus codec on xlite stations talking directly to each other after sip.
i understand there’s a patch to asterisk which allows this opus passthrough.
i don’t see anywhere though stating if this patch is compatible w/ asterisk v1.8.6?
how am i to know?
i’m config’d w/ canreinvite (media direct), no nat, no encrypt.
any choice but to upgrade?
i know this is wise anyway, but it need a quick solution for now.