Ender3 S1 firmware reverse

Ender Series Creality Ender-3 S
1 
Hi guys,
I installed the latest firmware (V3.1.9) on my Ender3 S1.
I'm not very happy with it and would like to go back to V3.0.4_H.
Of course, the display firmware has also been updated.
Is this possible and how do I do it?
Thanks in advance.
Rene
2

Rename the old firmware and reinstall it. Not 100% sure with the S1 but most seem to know by name if it’s an older version and won’t let you. Rename seems to solve this.

3 
Thanks for your thoughts.

Unfortunately, this isn't the solution. Let's go back...
Because the display firmware also needed to be updated before installing V3.1.9,
it looks for me the display can be the problem.

So first I downgraded the display firmware back to V3.0.4_C (this version had 
the display firmware in it).
After that, the motherboard went smoothly to 3.0.4_H