This morning my Razr M received the latest OTA update. I was previously rooted with a locked bootloader (I know, bad choice).
I proceeded with the update but my phone massively screwed up: lost wireless, contacts malfunctioned, several apps failed.
I went through all the steps to clear cache, soft reset, hard reset, etc. Ever sense my phone has been stuck on the setup wizard screen stating "Please wait, this may take a few minutes". I left this morning at noon returned home at 7 and it is still on that screen.
Try using RSD to restore to the same version (4.4.2). I've gotten that wireless issue before, and I just had to format userdata and reinstall the update to get it working.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?