I tried to replace with different sd cards. It finally works with a 16gb card. Not several 32gb cards. Not sure it is card issue or firmware update... but suggest you try the same.

Some screenshots

Model : Hardware Version : Firmware Version : ISP : I bought an nc450 around 3 months ago. Camera was nice, stable and good view at night. However, i never got the camera recognized sd card. The 32gb...

Model : Hardware Version : Firmware Version : ISP : I bought an nc450 around 3 months ago. Camera was nice, stable and good view at night. However, i never got the camera recognized sd card. The 32gb...

vieldcs wrote Make sure the NC450 is with the latest firmware and your phone is with the latest version.The 24hr recording needs to work with a sd card. Is the SD card recognized by the app? Do you...