Tilt2 board on Tp2

[Clad]

Hi,
my friend recently connected a Tilt2 mainboard(the lower part) to my european Tp2(upper part with front camera) because my phone was bricked. I've noticed that although there is a camera icon to switch to the front cam,when i launch it, the screen would remain dark and no photo can be taken. it seems that the phone cannot find the necessary values or settings to launch the front cam.

Is there any way to unlock the front cam? thanks.