save to nas: Search my posts, they are few. It wil not solve your WD problem, but should enable you to fully understand the issue.
In short: 1. You need a method to limit disk space a camera sees. This needs to be done on the NAS. Or it will act as full disk is availale for the camera and will not work. 2. Then put in samba user and pwd, hit test (General, NAS), 3. and move over STorage, General to format.
As for unbricking, here are some true experts. I never did it. But, I bought all cams from China in last 2 months, and had no problem. Never tried to mess with their fw as I never try to fix what is not broken in a way that bothers me.