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DVR/NVR Firmware download address:
For example in above photo, the system version is : V4.02.R11.00031095.12001

Now, we can search the match firmware version via the red color key number  00031095 in our system:

Click to download the new firmware

Key Number List
Download Link
00031001http://pan.sohu.net/f/MTY3MzcsaGRpa2k.htm
00000002http://pan.sohu.net/f/MTY3MzgsaGRpa3U.htm
00000003
http://pan.sohu.net/f/MTY3MzksaGRpa3g.htm
00031026
http://pan.sohu.net/f/MTY3NDAsaGRpbWI.htm
00031035http://pan.sohu.net/f/MTY3NDEsaGRpbWg.htm
00000045http://pan.sohu.net/f/MTY3NDIsaGRpbWM.htm
00000053
http://pan.sohu.net/f/MTY3NDQsaGRpbW0.htm
00000058
http://pan.sohu.net/f/MTY3NDYsaGRpbWQ.htm
00000061https://pan.sohu.net/f/MTcwMTgsaGliaHU.htm
00000062
http://pan.sohu.net/f/MTY3NDgsaGRpbXU.htm
00000064
http://pan.sohu.net/f/MTY3NDksaGRpbXg.htm
00000066
http://pan.sohu.net/f/MTY3NTAsaGRpcWI.htm
00000068
http://pan.sohu.net/f/MTY3NTEsaGRpcWg.htm
00000069
http://pan.sohu.net/f/MTY3NTIsaGRpcWM.htm
00000070
http://pan.sohu.net/f/MTY3NTMsaGRpcWs.htm
00031071http://pan.sohu.net/f/MTY3NTQsaGRpcW0.htm
00000072
http://pan.sohu.net/f/MTY3NTUsaGRpcXE.htm
00000073http://pan.sohu.net/f/MTY3NTYsaGRpcWQ.htm
00000075http://pan.sohu.net/f/MTY3NTcsaGRpcWk.htm
00000076http://pan.sohu.net/f/MTY3NTgsaGRpcXU.htm
00031077http://pan.sohu.net/f/MTY3NTksaGRpcXg.htm
00031079http://pan.sohu.net/f/MTY3NjAsaGRpZGI.htm
00000081http://pan.sohu.net/f/MTY3NjEsaGRpZGg.htm
00000082
http://pan.sohu.net/f/MTY3NjQsaGRpZG0.htm
00000083
http://pan.sohu.net/f/MTY3NjcsaGRpZGk.htm
00000084
http://pan.sohu.net/f/MTY3NzAsaGRpaWI.htm
00000085
http://pan.sohu.net/f/MTY3NzIsaGRpaWM.htm
00000087http://pan.sohu.net/f/MTY3NzQsaGRpaW0.htm
00000089http://pan.sohu.net/f/MTY3NzksaGRpaXg.htm
00000090http://pan.sohu.net/f/MTY3ODEsaGRpdWg.htm
00000092http://pan.sohu.net/f/MTY3ODQsaGRpdW0.htm
00031094http://pan.sohu.net/f/MTY3ODgsaGRpdXU.htm
00031095http://pan.sohu.net/f/MTY3OTAsaGRpeGI.htm
00000097http://pan.sohu.net/f/MTY3OTIsaGRpeGM.htm
00000098http://pan.sohu.net/f/MTY3OTQsaGRpeG0.htm
00031099http://pan.sohu.net/f/MTY3OTUsaGRpeHE.htm
00000101http://pan.sohu.net/f/MTY3OTYsaGRpeGQ.htm
00000104
http://pan.sohu.net/f/MTY3OTcsaGRpeGk.htm
00031105
http://pan.sohu.net/f/MTY3OTgsaGRpeHU.htm
00000107
http://pan.sohu.net/f/MTY3OTksaGRpeHg.htm
00031109
http://pan.sohu.net/f/MTY4MDAsaGR1YmI.htm
00031110http://pan.sohu.net/f/MTY4MDEsaGR1Ymg.htm
00000111https://pan.sohu.net/f/MjUwOTksY3FieHg.htm
00031113   
https://pan.sohu.net/f/MjUxMDAsY3FoYmI.htm
00031114   
http://pan.sohu.net/f/MTcwMTcsaGliaGk.htm
00000115http://pan.sohu.net/f/MTcwMTgsaGliaHU.htm
00000116
http://pan.sohu.net/f/MTcwMTksaGliaHg.htm
00000108http://pan.sohu.net/f/MTg3OTUsaHVpeHE.htm
00000117http://pan.sohu.net/f/MTg3OTQsaHVpeG0.htm
00031118http://pan.sohu.net/f/MjE0OTUsY2hteHE.htm
00031119http://pan.sohu.net/f/MjE0OTcsY2hteGk.htm
00000122
https://pan.sohu.net/f/MjUxMDEsY3FoYmg.htm
00000123https://pan.sohu.net/f/MzIwMTYsa2NiaGQ.htm
00000124https://pan.sohu.net/f/MjUxMDIsY3FoYmM.htm
00000125https://pan.sohu.net/f/MzIwMTcsa2NiaGk.htm
00000126https://pan.sohu.net/f/MzIwMjEsa2NiY2g.htm
00000127https://pan.sohu.net/f/Mzk2NzQsa3hkaW0.htm
00000128https://pan.sohu.net/f/MzgzOTYsa3VreGQ.htm
00000129
https://pan.sohu.net/f/Mzk2NzUsa3hkaXE.htm
00000130
https://pan.sohu.net/f/Mzk2NzYsa3hkaWQ.htm
00000131
https://pan.sohu.net/f/Mzk2Nzcsa3hkaWk.htm
00000132
https://pan.sohu.net/f/MzgzOTcsa3VreGk.htm