I have this problem too.
Correct Answer by Paul Anholt about 5 years 4 months ago
In TC5.1 the behavior has changed. The RED LED no longer comes on, but rather the green LED starts blinking. The process is still the same:
- Turn the codec off.
- Press and hold the power until the LED on the front turns red flashes green.
- Release the power button, and press it twice within 5 seconds.