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Hey guys. Just to be clear. Do camera firmware's definitely have to be installed in order? I have a DS-2CD2185FWD-I on V5.5.53 build 180802. I want to upgrade it to 5.6.3. Can I go direct, or do I need to upgrade to each and every subversion first? Thanks!

Hi everyone, I have a DS-7604NI-K1/4P (not the B version) NVR. It's been working flawlessly for 1.5 years, with the same HDD. But a few weeks ago it started to randomly beep (5 beeps) and the HDD seemed to be constantly powering up/down. No indication in the Hikvision logs as to what the cause...