1.Only firmware version V5.07.XX can be upgraded to this version.
2.This firmware makes DHCP as the default Internet Connection Type, specially for Hong Kong.
3.Incorrect upgrade will damage your device.
4.Please upgrade your device by cable connection.
5.Do not power off the device when upgrading.
6.Please unzip the file you downloaded and use the file ended with "bin" or "trx" to upgrade your device.
7.After upgrading, please restore it to factory defaults and configure the device again.