You should wait a little bit, by the end of the month the next Braiins OS version will come out, and i think they are implementing an "easier method to go back to Bitmain's firmware" which probably involves the Braiins OS web ui, because if you do install Braiins OS right now using their python script (not the Web UI) it is VERY EASY to go back to the original firmware as that script makes a backup first, while the current web ui method doesn't.

Though he hasn't posted any videos, he has posted lots of results, GOOD results. I never expected those S9 to become this efficient AND stable. I see little reason to mess with any other firmware at this point... (And i happen to know results from another person that used it in hundreds of units...).