I don't know anything about ColorOS but was handed an Oppo phone. Where do I get help if I don't know the Android version or the phone model.
It's with regard to KRACK.
Never buy version 1.0 of anything.
Don't it always seem to go
That you don't know what you've got
Till it's gone
They paved paradise
And put up a parking lot
Joni Mitchell's Big Yellow Taxi