Hi @magnargj
Can you describe what you already did in order to fix your issues?
This will allow people to avoid suggesting things you already tried.
You mentioned having tried to reflash, but how?
There are several methods and I guess this is the way to go except if there is a hardware issue with your device.
@mschmids It worked, I updated uAdblock with only the youtube block and that did the trick. Now it only remains to figure out which list was the culprit... Thanks!
@magnargj The truth is that I do not know, the problem seemed in the management of USB, the installer stayed in 'Flashing', but nothing happened to the phone, Android was still there.