Hello,

FW version 3.4.3P
If DVR running FW version 3.4.3, please use "tar" file.
all settings will be kept.


FW version 3.3.0P
If DVR running FW version 3.3.0 , please use "rar" file to perform "flash burning" locally on the device - 
attached flash burning instructions file 

Provision-ISR Technical team