Samsung Galaxy S4 models have started receivingCyanogenMod10.1 officially. Here is the tutorial to install the popular bloatware free custom firmware on your Verizon Galaxy S4 SGH-i337.

Note:this guide is specifically focused on installing CyanogenMod on AT&T Galaxy S4 SGH-i337, for installing CM10.1 Nightly on Verizon Galaxy S4, read this tutorial, orCM10.1 for Verizon,CyanogenMod for T-Mobile, andCM 10.1 for Sprint SGS4to flash CyanogenMod on other Galaxy S4 models.

Prerequisites toinstall CM10.1 Nightly on AT&T Galaxy S4 SGH-i337:

Create a backup of all important data in your Galaxy device.Download and install USB drivers for Galaxy S4 in your computer.Enable USB debugging option by pressingMenu>Settings>Applications. Navigate and tap onDeveloper Optionsto ensure thatUSB Debuggingis enabled.Make sure thatClockworkMod recoveryorTWRPis installed.Ensure that your SGS4 carries more than 70% of charge.

Guide to install CM10.1 Nightly on AT&T Galaxy S4 SGH-i337:

Required files: download CM10.1 file for Galaxy S4 i337 fromhere.Also download the Google Apps Package fromthis linkfor Galaxy S4.

After downloading the above files on your computer, connect your Galaxy smartphone with the computer using the USB data cable and copy both these files on your Galaxy S4.Disconnect Galaxy S4 from the PC and switch it off to boot it into the recovery mode: press thevolume up,homeandpowerbuttonssimultaneously - release when the Samsung logo shows up.From the recovery mode menu now, perform the data wiping tasks: selectwipe data/factory resetoption and confirm the operation -Select thewipe cache partitionto clear the cache andwipe dalvik cacheto clear dalvik.

Next, flash the ROM file: selectinstall zip from sdcardand follow by taping on thechoose zip from the sdcardoption.Locate the CM10.1 ofr AT&T ROM file and confirm installation.Once installation is completed, repeat the above step but this time choose and install the Google Apps package file instead of the firmware file.Once done go back to main recovery menu andselectreboot system nowto boot your AT&TSamsung Galaxy S4SGH-i337 to the newly flashed CM 10.1 Nightly mode.