Please choose the correct version to upgrade for the device to follow local country regulations
It is NOT suggested to upgrade firmware which is not for your region. 
Release Date: 20170413
Firmware Version: V1.0.0.11(4758)
Release Note:
1.This version is compliant with CE standard.
2.Fix the issue that NVR can't scan IP camera automatically through long range CPE connection. 
3.Add Auto-Bridge function to enable two CPE connect to each other automatically when they power on in the factory default settings. 
4.Please unzip the file you downloaded and use the file ended with "bin" or "trx" to upgrade your device.
5.After upgrading, please restore it to factory defaults and configure the device again.