Notes:

1.This firmware is only fit for O2V2.0 and its firmware version must be in V1.0.0.XX or more.
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.

Update:
1.This version compatible with FCC standard.
2.Upgrade it to enable high output power feature.
3.The maximum output power value can be set to 29dBm.