Iam using Asus RT-N66U for my home network and iam very happy with it, iam using merlin firmware. Yesterday i bought same router for my office network, to upgrade my old router, but now on the box its written RT-N66U C1 manufacture date 2017, and i cant find no information about this revision. Can you help me with this, can i upgrade it with merlin or other third party firmware, or should i send it back to shop for refund?