For 2 months my RAZR Maxx had a solid 4G connection. On 4/27, the latest update was installed. After installation, it booted with a 1X connection. I powered off and rebooted. It came up with a 4G connection. After a few minutes, it switched to 3G. Then it switched to 1X. And then finally, no connection. Then it went back to 4G. Then the cycle started again. It sometimes skips a step and the interval time varies; but, it constantly switches. Verizon and Motorola say that they can't roll back an update. (I think that means that they won't. Can't implies that they have no software configuration management.)
If anyone else is having this problem, please let me know and contact Verizon.