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hello, i have 4 NVR ds-7616ni-k2 i just updated 1 for version v4.72 all worked fine in the 1 nvr the update good, but when i tryed to update the sec nvr (same as the first NVR ds-7616ni-k2) i get all installd but after he power on i get in the open window for "username" wrote in "gibberish" when...