Download Install The AT T Galaxy S4 SGH I3. Android 4. 4. 2 Kit. Kat OTA Update I3. UCUFNB1 The Android Soul. LEAKED FIRMWARE INFOFirmware Version. I3. 37. UCUFNB1. Android Version. Android 4. 4. 2 Kit. Kat. Is this Official YES This is an OTA update. Stability. Full stability. The procedure is quite simple and familiar to any Samsung user, using the Odin flashing tool to Install Android 4. KitKat on ATT Galaxy S4 SGHI337. The Android 4. 4. KitKat I337UCUFNB1 firmware is available for the ATT Samsung Galaxy S4. Here is how to install the OTA update manually. Credits. Maribou  jeboo  Known BugsIssues  WARNING This update contains a new bootloader due to which downgrading to previous stock firmwares WILL NOT BE POSSIBLE. Microsoft Works Torrent Download here. As of yet, root CAN NOT be retained or acquired on this build I3. UCUFNB1. Warranty may be void of your device if you follow the procedures given on this page. You only are responsible for your device. We wont be liable if any damage occurs to your device andor its components. AT T GALAXY S4 SGH I3. Download I337ucufnb1 Android 4.4.2 Kitkat Firmware For Droid' title='Download I337ucufnb1 Android 4.4.2 Kitkat Firmware For Droid' />ANDROID 4. KITKAT OTA UPDATEBefore you begin with the instructions below, make sure your android device is adequately charged at least 5. STEP 0 CHECK DEVICE MODEL NO. To make sure your device is eligible with this, you must first confirm its model no. About device option under Settings. Another way to confirm model no. Download I337ucufnb1 Android 4.4.2 Kitkat Firmware Download' title='Download I337ucufnb1 Android 4.4.2 Kitkat Firmware Download' />It must be SGH I3. Do not use the procedures discussed here on any other Galaxy S4 including the Galaxy S4 variant at Sprint, Verizon, US Cellular, T Mobile and other International variants or any other device of Samsung or any other company. You have been warned  STEP 1 BACKUP YOUR DEVICEBack up important data and stuff before you start playing around here as there are chances you might lose your apps and app data app settings, game progress, etc., and in rare case, files on the internal memory, too. For help on Backup and Restore, check out our exclusive page on that linked right below. ANDROID BACK UP AND RESTORE GUIDE APPS AND TIPS  STEP 2 YOU MUST HAVE STOCK FIRMWARE INSTALLEDIts required that you are unrooted, and dont have a custom recovery CWM or TWRP installed. Plus, no custom firmwares, either. So, its mandatory that you first go back to stock to Android 4. AT T Galaxy S4, using the firmware MK2. Follow the link below to Update or Install Plain Android 4. Samsung, which is neither rooted nor has a CWMTWRP recovery installed. Then try the guide below, and using the stock recovery, you shall be able to update to latest Android 4. Kit. Kat Update for your AT T Galaxy S4 without any trouble. INSTALL ANDROID 4. Edimax-SP-1101W-Firmware-Upgrade-Tool_2.png' alt='Download I337ucufnb1 Android 4.4.2 Kitkat Firmware' title='Download I337ucufnb1 Android 4.4.2 Kitkat Firmware' />Download I337ucufnb1 Android 4. Kitkat Firmware UpdateMK2 FIRMWARE   STEP 3 INSTALLATION INSTRUCTIONS  DOWNLOADSDownload the firmware file given below. OTA FILEDOWNLOAD LINK  MIRROR  File name 2. MB  STEP BY STEP GUIDEImportant Note Backup important files stored on internal SD card of your device, so that in case a situation arises requiring you to do a factory reset after flashing the leaked firmware, which might delete internal sd card too, your files will remain safe on PC. Make sure you are running Android 4. MK2 firmware for your AT T Galaxy S4. And that its not rooted, and has stock recovery installed, not CWMTWRP recovery. If not, follow the link in Step 2 above to installed the MK2 firmware first. If your AT T Galaxy S4 is running MK2 firmware, then you wont be able to update to Android 4. Rename the OTA file that you downloaded from the link above to change its extension to. Download I337ucufnb1 Android 4. Kitkat Firmware SmtThe new file name should then be 2. Transfer the 2. 40. SD card Note that you must put the 2. Dont put the file inside any folder on your card. Boot into Recovery mode. Power off your phone and wait for few seconds until its completely powered off. Hold down the following three buttons together Home Power Volume UP and release them as soon as you see the Samsung Galaxy S4 logo on the devices screen. This will boot your phone into recovery mode. It must be saying 3e recovery at the top. If not, its not stock recovery and you havent read the above carefully. Pls do now. Once in recovery, use Volume buttons to navigate between options and Power button to select an option. And if you need further help with booting into recovery mode, check our Galaxy S4 Recovery Mode help page. Now select Apply update. SD card OR select Apply update from external storage if you transferred the file to external storage. Wait for the device to finish the flashing process. Once its done, select Reboot from the main menu in recovery. Thats it. Youre done. FEEDBACK US It was easy to flash the OTA update of Android 4. Kit. Kat for AT T Galaxy S4, right Let us know in comments below.