Oppo N1 Mini Stuck at Boot logo

Hello friends. My device is Oppo N1 Mini. I tried to factory reset it then when i reboot it, it is now stuck on the oppo boot logo. I can access on fastboot mode but i cant go to recovery mode using Volume down + Power button because it is stuck on the logo. What to do? I also tried to flash a new twrp rom but nothing happens.. TIA