My wife saw the update to KitKat on her Razr M. I used Radiocomm to change the NV to 00 and we are both on AT&T Straight Talk. Her phone had no signal after the update. I tried everything and couldn't get Radiocomm to recognize it. I was not changing it to usb debugging. I changed her NV to 00 and used it for a week. I upgrade mine and have it working also. The only thing we have trouble with is a pop up about "fast dormancy". Calls and text work no problem. I don't know if I should try and disable fast dormancy or just leave it alone. The H+ speeds on AT&T Straight Talk are alot faster than the Verizon 3G Straight Talk plan we had. I'm thinking of not letting it bother me and just use the phone. One thing I notice is on JB text screen it had a dark background. KitKat is white. It is a little harder in bright light to see text. I can't change themes with a locked bootloader. Hey I'm happy with this phone.
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