[Motorola Droid RAZR] Ohmster:
Just ran into this issue myself within 24 hours. Yes, I freaked out, that is a dealbreaker for me. but fortunately for use, there are some deleopers and serious modders & rommers out there, paying attention. hakarune himself wrote a comprehensive How To guide for CM 11. Because of me *****ing about it, and a LOT of others with issues, he revised this post to verion 2. It covers almost anything. I made a pdf file of the guide, so I can use it offline if necessary. Here is hakarune's Setting up CM11 on the RAZR (Guide v.2) post.

Consider this your "CM Bible" until something better comes along. My first attachment is the guide itself. It will help you with many problems, some "alone time" to understand it and get it done. The remaining screencaps are from my phone right now. Shows current build, kernel version jbx, and most of what you want to know and see on your phone. Updates are coming in for the MC11 nightlies because they are very close, but no cigar. If you installed it properly the way shown to you in the guide, with all necessary patches and kernel, you are good to go. With so many updates every day, you want to update each time, from the menu, hassle free. This is how it is supposed to work unless going to a totally different rom. But each "update' undoes all the cool stuff you added during installation. So many in fact, that I litterally have to start over each time I update the phone, for now. I replied to a fellow about my SVOX Victoria voice disappearing after I paid for it and yes, I installed it on the SDcard, this is broken in CM11, had to move Victoria back to internal storage.

But I made a list of steps to take when updating, you should follow it. My issues were WiFi and WiFi AP, neither of them were working again, just like I started from scratch. So I made a simple procesure to follow, Each and every time you do a system update. Be it minor or be it major. Follow the steps and your WiFi and Wireless AP point will work again. I just uses this guide because I totally lost signal on data and phone and it scared the crap out of me. Once again, the guide fixed me up in no time.

Setting up CM11 on the RAZR (Guide v.2)

My Own Update Guide how NOT to lose your WiFi, jbx kernel, and other goodies.

Try them out buddy and see if this helps you. When I lost service, I actually *did* reinstall Safe Strap 3.6.5 from CM11, although the rescue mode was clearly there away at boot. That was a no-no. I had boot to recovery, wipe cache and dalvik, install Safe Strap 6.6.5 which was already active in stock, install the firmware, then reboot to CM11. Worked like a charm. Both data and phone service back like it never took a dive.

Ohmster's 9 Steps for Getting your WiFi and jbx kernels back after updating.

Follow my 9 step instructions for getting your WiFi and WiFi AP back and it will work. I tested this with a wifi tablet and WiFi Manager. If something is wrong with the WiFi supply, it shows dithered ovals, bigger ones for stronger signals. Once I followed the steps, my WiFi was back, rock solid, WiFi Access Point was solid as a rock, jbx kernel installed (A newer version this time, should be better!) And I am good to go. Made a backup of all this once confirmed working well so at least I can go back to something good if I must restore.

Tell us what happened. And if my post in any way helped you, please be kind and click the Thanks button under my name on the left. Good luck buddy!