Click download

The CSC code contains information about software packages specific to a particular region, carrier branding and also APN settings for data connection.
Lets start

Requirements :
1. Samsung galaxy device
2. "Android Terminal Emulator" App

Before Startting :
1. Backup your important data because changing CSC will delete all data on your device.
2. Root your Samsung galaxy
3. Download "Android Terminal Emulator" App (Link below)

Steps :
1. Open "Android Terminal Emulator" App and type
Then enter
It will ask for root permission
2. Type
Then enter (Text file link below)
It will open the "Preconfig"
If it doesnt work, Try this
Then enter (Text file link below)
3. Select sales code then Install
Your device will reboot
Done!

YT video link : http://www.youtube.com/watch?v=K6O09G_OIawNotes :
~ WARNING : Changing CSC will factory reset your device (delete all data)
~ This method will work only on ROOTED devices
~ This will only work if your current firmware support Multi-CSC
~ It might display "PreconfigUI does not support SingleCSC" if your current firmware doesnt support Multi-CSC.
~ This method should work for many galaxy devices which running Android jelly bean, tested on galaxy advance, S3 and S4.
~ Devices which running Android ice cream sandwich, just dial *#272*Phone’s IMEI Here# (you can get the IMEI of your device by dialing *#06*).

Downloads :
"Android Terminal Emulator" App HERE
CSC1.txt HERE
CSC2.txt HERE

Custom recovery will allow you to perform some powerful actions, like full backup / restore, flash custom ROMS, Mods, themes, apps, install updates to Android operating system manually and many other features.

Flashing/installation instructions :
 It wont wipe any data but its recommended to backup your important data first just in case of this process corrupt your data 
1- Download the correct recovery file for your device (Link below) or any recovery you prefer
2- Download and install Samsung mobile driver (Link below)
3- Unzip the downloaded file only one time
4- Run "Odin3" as administrator
5- Click on PDA button and browse to the unzipped file.tar that you extracted
6 - Disconnect any device connected to USB ports on your computer, disable your antivirus software and exit Samsung Kies
7 - Shut down your device
8 - Put your device into Download Mode (Volume Down + Home + Power)
9 - Volume up to continue
10 - Connect the device to your computer by USB cable and wait until you get a sign in Odin (ID:COM section) and "Added" in message box
11 - Make sure re-partition is NOT SELECTED [Very important]
Done !
Notes :

• I am not responsible if something happened to your device (use this AT YOUR OWN RISK)
• Skip step 2 if you already have Samsung Kies or Samsung mobile driver on your PC
• This stuff is made for Samsung galaxy S4 devices (AT&T, Cricket, GT-I9500, Canada/Bell, Sprint, T-Mobile, US Cellular, Verizon and GT-I9505)
• Some devices have a locked bootloader, unlock it first before flashing the recovery file
• I just converted "*.img" files from clockworkmod website to "*.tar" file which you can flash by Odin3
• (You can convert it by following this easy TUT : How to Convert *.img to *.tar.md5 )
• Official CMW website www.clockworkmod.com
• Download and Install Kies or Samsung mobile driver, if you didnt get a sign in ID:COM or "Added" in message box

Downloads :

• Odin3_v3.04 HERE, v3.07 HERE, v3.09 HERE 
• Latest Samsung Mobile Driver Here
• Latest Samsung Kies Here

Touch CWM

• Samsung Galaxy S4 (AT&T)                 Ver 6.0.3.2 / Ver 6.0.4.4
• Samsung Galaxy S4 (Cricket)               Ver 6.0.3.2 / Ver 6.0.4.4
• Samsung Galaxy S4 (Canada/Bell)      Ver 6.0.3.2/ Ver 6.0.4.4
• Samsung Galaxy S4 (Sprint)                Ver 6.0.3.2/ Ver 6.0.4.4
• Samsung Galaxy S4 (T-Mobile)           Ver 6.0.3.2/ Ver 6.0.4.4
• Samsung Galaxy S4 (US Cellular)        Ver 6.0.3.2/ Ver 6.0.4.4
• Samsung Galaxy S4 (Verizon)             Ver 6.0.3.2/ Ver 6.0.4.4
• Samsung Galaxy S4 LTE (GT-I9505)    Ver 6.0.3.3/ Ver 6.0.4.4
• Samsung Galaxy S4 (GT-I9500)           Ver 6.0.3.2 
• Samsung Galaxy S4 (C Spire)                                   Ver 6.0.4.4