Generally, no. Unbranded units have different bootloaders. Using official firmware will corrupt the language pack (“English menu to Chinese” bug) or brick the device. Contact your OEM provider.
Before diving into the update process, let's establish a baseline. The DS7216HVISH is typically associated with Hikvision’s embedded DVR lineup (or a compatible OEM version). It supports up to 16 channels of analog HD cameras (TVI, AHD, CVI) as well as IP cameras. ds7216hvish firmware update updated
Because this model is "Phased Out", firmware must be manually downloaded and applied. Firmware - Download - Hikvision Global Generally, no
If the USB update fails and your DVR is stuck on “System updating, do not power off” for >30 minutes, use TFTP: Contact your OEM provider
If you have already completed the update and are just reporting the status, the DVR should now be running the final release provided by Hikvision for that generation. No further action is likely needed unless you are experiencing specific bugs.