Just click OK and you can flash firmware normally.
We’ll remove this pop-up window soon. Sorry for the inconvenience.
This is a problem occurred only in Mac Sierra.
Please follow the instruction below to change the security setting (it’s included in the Notice.pdf within the uArm Assistant zip file available on our download page):
If you are using macOS Sierra, you need to input the following command in red in terminal (search “terminal” in spotlight search).
You need to input your Mac password.