Best Answer spainter , 11 May 2015 - 10:17 AM
Start here and follow the instructions exactly. http://www.droidrzr....use-of-moto-41/
Here is where you can get the fxz file. http://www.drdevs.co...Droid RAZR HD)/
I know you said you have had problems with root. I have had my razr maxx hd rooted and unlocked since I got it new and haven't had problems with it at all. With a nuke and repave to KitKat you shouldn't have problems. If your bootloader is unlocked or if you want to remain stock you can flash the .15.1 version. If you want to unlock you have to flash the .10 version and unlock before you upgrade to the .15.1. If I were you i would read the thread clear through and look at the thread about unlocking before you make your choice.
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