Upgrade Notes:
1. This firmware is only fit for AC5v3.0 and its firmware version must be in V02.03.01.XX or more.
Note: The hardware version marked at the label of devices as below:
2. Do not power off the device when upgrading.
3. Please unzip the file you downloaded and use the file ended with "bin" or "trx" to upgrade your device.
4. Please reset it to factory settings after upgraded it.
Release Notes:
1. Increased Tx power to 19dBm
2. Added FLASH locking mechanism and cannot upgrade previous version
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