These are flashable zips that will change your baseband (radio firmware). Google it See twistedxx's post quoted below if you have no idea what this means. If you have an HTC One X (Tegra 3) you're in the wrong place.
Radio = firmware
So I found this in the updater script for this CM9 port for the EVO 4G LTE: http://forum.xda-developers.com/showthread.php?t=1683384
looks like we can stop using fastboot to write kern...
**I did not write these scripts, just updated the flashable zip for our x86 Asus phones**
**All work done by Paget96**
ORIGINAL Mod Thread here : http://forum.xda-developers.com/android/software-hacking/tweak-l-speed-v1-0-02-02-2015-t3020138
Are up in the OP...and here:
CM 10.x: http://d-h.st/DcT
New ATT radio is up in the radio thread for anyone who's interested :)