there is my problem:
I have two dvr's AVC760ZA RU(firmware 1200) and AVC760Z RU(firmware 2020).I need to see HDD's from another DVR in central office, but i see only 1 chanel when insert HDD from another dvr.
I downloaded firmware CPD5601_AVC7601_2020 but when i tried to update it dvr wrote that is wrong model or cheksum.
Where i can get the right software or why this firmware didn't work