Hey guys! My IP Camera NVR is stuck at NVR logo ,so I want to flash firmware via USB pen drive. My H.265 NVR Model No. is NR-6509. I tried to find firmware for this model on google but I failed, because I don't know the company of NVR and there is no Company Logo on NVR. So plz can anyone provide me firmware file or link to download for my NVR ?