We tried to upgrade to the latest code 22.214.171.124 from 126.96.36.199 on our 4402 controllers. We have 3 of them and ~70 1242APs. The controllers upgraded sucessfully, but many of the AP's don't seem to be coming back after the upgrade. We checked a few of the APs and we noticed the status light was purple and even tried powering them off and back on. We are not quite sure what what else we can do, but try rolling back to the old code. Any ideas would be very helpful. Thanks!