cyber_shady

i have a Dahua NVR 4216 Vertial it was working fine,i downloaded a firmwere from this website ftp://ftp.asm.cz/Dahua/kamerove_systemy/_Firmware/01NVR/NVR4xxx/10%20language/DH/DH_NVR4xxx_Eng_P_Startup_10Languages_V3.200.0000.0.R.20160621.bin it uploaded the firmware, but after reset it didnt show video, no signal either VGA or HDMI, not Ethernet signal like if the firmware were bad or something else, is there any way i can load the old firmware or it juts wont work anymore, thanks in advance.