after the introduction of the SurPlus patch, i upgraded from 11.2.3 to 11.6 without incident. then on Monday i upgraded too 11.6.1 before installing 12.0.1. again, this went smoothly... with just one exception: i appear to have lost bluetooth functionality. i only mention this because my card is an Apple Broadcom BCM943602CD card (purchased from OSXWiFi in Feb of 2019) which is supposed to be supported in Monterey...