spe99 0 Posted May 7, 2018 Hi, I tried to update the firmware but 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. Share this post Link to post Share on other sites
spe99 0 Posted May 28, 2018 Hi, Nobody can help me please ? Regards Share this post Link to post Share on other sites
Securame 0 Posted May 28, 2018 And your DVR is exactly which one...? Share this post Link to post Share on other sites
