onpointG35
Android Enthusiast
Just flashing the hybrid radio isn't enough. You'll also need to make some build.prop changes to tell the phone that it's allowed to use LTE.
Or you could just flash this handy All-in-One LTE Enabler.
I did not include this but I can confirm I've modified the build.prop using the text editor. Not sure if this is important but I am stock (unlocked and rooted of course) does this change the way I should go about enabling LTE?