My Marshall stanmore would not go into Pairing at startup or when pairing button pressed. Everything else worked great in aux mode. Three phones, bluetooth testing and stanmore factory reset and still no joy.
But I while playing with it I got it to go into pairing(red blinking light) and the fix now works everytime.
Fix is: I press and hold the pairing button then quick press the mode button and the unit goes into pairing(red blinking light) pairs with my phone and works great. How this helps someone or someone tells me why it works.