I'm new to the site but have bee having similar issues as blind. My phone is newly rooted (mistake) and I was removing an app and there was an error with something closely titled "android.ui.com" and after a reboot I lost the notification bar and answering the phone now requires an extra 5 steps instead of a "swipe". So I started running through your steps and it went exactly as described except for two things: In device manager there wasn't a modem named LGE AndroidNet for USB Modem and the process didnt actually complete. I'm not allowed to post the results in my first post but I will shortly in the second.
