Macooki

And it was the power supply... Everything is perfect now
 
 
So for people questioning, if you can printing without any problem on your UM3 but your leds are flikering time to time, i think it's beginning of the failing power supply before it completly failed. With a new power supply leds lights aren't flikering anymore 😉

I've successfully link the camera module to my PC. I've just plug with another micro usb to usb cable, open Camera app in Windows 10 and switch to it.
 
I've replug it in my printer, restart it and it worked perfectly now!

To conclusion for this topic: I think that plug it directly in my PC reset my camera module. I've tried plug/unplug camera module few times, factory reset my printer but it doesn't do anything. It has worked only after i plug into my computer and replug it in my printer.
 
Thanks for helping me 😇
 
 
EDIT 14/08/2023: I found the exact problem: the micro usb port on the camera module was bent, so as any micro usb port (damn I hate this kind on port) it could'nt connect properly. More precisely, pins inside was bent, so i gently push it back (could'nt really see diffrence visually) but now it worked!