If you’re now updating your motherboard BIOS for any reason, you’ll need to do the CAP conversion. This is a two-step process which we’ve detailed in the video below so you can see how it works, and as a reference to check if your update has gone smoothly.
Can you post a movie guide how to roll back to 1404 or earlier version?)
Flash back guide please refer to here. Not a video. But a very detail written by mod HiVizMan.