I am assuming the following will work, because this is what I had to do for Jelly Bean:
Look for Dolphin ver 8.5.1 . It will work with Flash...just make sure to turn off auto update & don't update the Dolphin browser. Any version after 8.5.1 doesn't support Flash.
I'm using Dolphin v.8.7.0, and Flash is working fine for me.
Really nice browser.