How to downgrade to v1.10 via Mac Version ABv3.4C

[xa0s]

I have no idea how to downgrade it to v1.10 all things considering since I'm far more accustomed to the PC version. So any pointer would be much appreciated. I have BA army and obviously, there's no BA Codex available via create a rooster due to recent release. This is fine with me since I'm still using the previous version. SO how do I exactly downgrade it to v1.10??

Thanks.

[Homer_S]

If you wait probably less than one week, the new BA codex will be released.

Homer