Hardware Version: V2.0

Software Version: V04.09.01.04

Upgrade Notes:

This firmware is only fit for 4G09V2.0 and its firmware version must be in  V16.03.07.xx more.

Note:
Please confirm the hardware version in device GUI: Basic Information->Hardware Version before upgrade

Do not power off the device when upgrading.

Please unzip the file you downloaded and use the file ended with "bin" or "trx" to upgrade your device.

Please reset it to factory settings after upgraded it.

Release Notes:

1. Fix some bugs

2. Fix the problem that the device receives short and long messages abnormally