We did not have success reprograming the DS3950.We were able to make the changes but every time we would power off then on the DS3950 it would go back to the same way. The good news is that we have another DS3950 unit coming to us. Once it gets here we will test it and make sure it is setup with the 8 partition key before shipping it out to you. I am very sorry for the inconvenience this has caused!