"Stock LTE ONLY users:
Rename it to update.zip, then you can flash.
Rooted LTE users who have made no filesystem modifications:
Those with CWM, rooted, but no filesystem modifications:
Good luck. I can modify the installer script if there is an issue.
Everyone else. If you flash this as GSM, well...tsk.
One radio is a patch file. I cannot extract it. Also, be aware, there is a bootloader in this. Those always make me worry.
My disclaimer: Don't flash it if you are squeamish or fear bricks."