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Which Dahua Firmware is the correct one?

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What's the difference between these 2 Firmware ?








Sound'like the same, only one letter change ! P and N ??!?!!?


My DVR run actually with System 2.608.000.0 Built date 11-08-2011 Web


My DVR work great, but I need upgrade it with new Firmware ?


Thanks for your help.

Best regards

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I tried to update the firmare dut I have the error message " Open file failed! "


The file on the USB key is: DH_DVRxx04HF-X-E(V2.0)_Eng_P_V3.200.0003.4.R.20170816.bin


Why it doesn't work ?

Any idea ?


Thank you.

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