[Q] LG G2 Mini D618 Infinite loop topic

Hi guys, i have a lg g2 mini d618 and i was playing whit it, but he have shutdown and initialized whit infinite loop, i have tried reset, wipe, flash, stock rom, nothing works... Anybody can help me?
i used the tutorial of xda and the respectiv archives, in the screen displays the LG logo before the android logo, someone please help me, thanks.