Version 4.0.3. Installation issue, LCD not matching board

Hi everyone, I am new here. I have flashed firmware to 4.0.3 on my stock wanhao without sensor and the LCD gives me error of not matching software with the board. I did follow the manual all the way through. When I press the screen otherwise it keeps playing the video of the benchy and that’s it. Will you recommend to downgrade to v4.0.0 ?
Update 11/11/2019 I have reinstalled LCD firmware and it seems the issue is fixed.