androst

hello, in NVR TYPE N6200-4EL N6200-8EL N6200-16EH motion detect no work correctly ..camera protocol i12 (ipc-camera). tested 2 mode i12 or onvif replay no work correctly FIRMWARE tested 20150124 20151231 20160707 camera type https://www.aliexpress.com/store/product/1080P-2-0-Megapixel-2MP-PoE-Cable-IP-Camera-Security-Dome-Camera-CCTV-48-IR-LED/1182439_32276638668.html?spm=2114.12010612.0.0.aslBsg There is someone who can give me help? thank you

Hello everyone with nvr n6200-EL and it can make a downgrade firmware 2015123110 to old version? in nvr update standard mode I have try nvr said invalid file,upgrade fails in recovery mode the downgrade is finished correctly but to reboot it to stop the network video recorder screen Do you have a solution? thanks you for all