I have a DN41R DVR system. I was on firmware 20171122. I managed to upgrade the firmware on my system to 20190401 and the system is working fine. However, when I try to upgrade to firmware 20190505 from http://support.annke.com/document/firmware/DN41R/201905/digicap.dav, it doesnt work. If i try this from a USB stick, I get a mistmatch error on the DVR, and if i try this from the webpage, it just say's upgrade failed. Can you confirm that the firmware is correct and it should work for DN41R?
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