Can you tell me what you did step by step that it bricked?
Have you tried to flash raw?
Have you tried plugging the phone into a PC does the PC recognize anything?
The cell phone doesn't turn on anymore (happened after the cell phone system freezes)
It does not turn on the screen, nor the battery charging led. (happened to connect at the beginning of the problem, when I tried to put it to load).
when connected to the PC via USB it appears as an unknown USB device.
That's when the battery led lights up, now nothing else appears when connecting it via USB
flash raw I can't do it, because the phone doesn't even turn on the screen, it doesn't go into fastboot mode, or anything like that