You can, but you have to change the subnet to flash them, guess its the same if you want to flash the NVR. I wish I would have bought a couple more from the guy, I asked him if he had anymore and he said he sold them all, so far I have burned by 2 of the sellers from china on ebay, total joke, I got refunded for 1 order of 2 mini dome cameras, and now I had to wait a few more days till the est shipping date passes, but the guy that sold them is already get red feedback after red feedback, so now I have to buy 2 more dome 2.8mm cams and one other to finish off my system.... ebay can really suck with these fraud sellers and the 30 day wait period.
Dil