Please read the following information before upgrade DCS-6112x and DCS-6113x FW.

Please upgrade "DCS-6112X_6113X_A1_FW_v1.20_preset.pkg" first if existed FW version is v1.00 or v1.10, then follow normal procedure to upload new FW. For FW version v1.20 or above, please ignore "DCS-6112X_6113X_A1_FW_v1.20_preset.pkg" and upgrade new FW directly. 

D-Link 
IP Surveillance Product Devision