MP 1.3.41 missing esc calibration option?

I’ve just updated to the latest version of Mission Planner, and I no longer have an “ESC Calibration” option in the Initial Setup screen. I’m running Copter 3.4-rc5 on my quad and trying to use OneShot, although the ESC Calibration screen doesn’t show up no matter what I set MOT_PWM_TYPE to.

it was removed due to problems. please refer to the manual method on the wiki