As for SP vice SK, sorry, I'm an old "mainframer" and I transposed "function keys". The keys I used are the two keys located directed below the PTT button. These keys are identified with a single and then double "dash" markings. The flashlight was activated using the "single dash" button.
As suggested above, I tried the single press, double press and triple press of the "single dash" button, all unsuccessful in reseting the flashlight option.
I've taken the battery out for a five-minute pause, reinserted it, but again, the flashlight remains on.
Does anyone know the secret handshake to reset the radio back to the factory settings? I've seen information on UV5R, etc., but not for this specific model.