Unable to Upgrade firmware on PTZ (failed to get the upgrading progress)

Hi guys


I have 3 DS-2DE4225IW-DE that won't upgrade firmware, I have tried via the camera web GUI and a batch configuration tool and get the message failed to get the upgrading progress.


Currently, they are on V5.5.71 108725 however the latest is 5.5.8

HIKVISION...

Unable to Upgrade firmware on PTZ (failed to get the upgrading progress)