FYI, the reason for wanting to downgrade is that after I upgraded from 2.1.1 to 2.3.0 if I do : curl -vX PUT http://127.0.0.1:5984/my_database/001/test.mp3 --data-binary @test.mp3 -H "ContentType:audio/mp3" the upload hangs.
This is on a 2.3.0 cluster with 2 nodes, previously on 2.1.1 it worked and on a single 1 node system the upload works fine. Bill