AC3.2.1 External LEDs APM2.6

Hi - simple question really.
I need to use external LEDs from my APM2.6, and I can’t find the LED_MODE parameter anywhere. (Running AC3.2.1, MP1.3.32.)
Has is been removed, and if so how do I run external LEDs and buzzers?

Yep, it’s been removed. Have a look here (bottom of the page) … opter_only