Unbinding a Hikvision device is not something that is required all that often, in most cases you can do the unbind from within the app. There are though some rare cases when the user does not have access to the Hik-connect account that the device is bound to, for example, if you have purchased a used device that has not been properly disconnected from its previous owners Hik-connect account or if you added the device to an employee's account and they leave without removing the device from...
How to Unbind a Hikvision Device using SADP on a PC
How to Unbind a Hikvision Device using SADP on a PC