Update AT&T Galaxy S4 to Android 5.0.1 UCUGOC3 Lollipop OS

Users of the AT&T Samsung Galaxy S4 can update their devices to the new Android 5.0.1 Lollipop now. You can catch the update lively on your device by going through the Software Updates options on the Main Menu through the OTA UCUGOC3 firmware. In case, if you haven’t received the update yet, follow the below steps carefully to update your Samsung Galaxy S4 I337 to the new Lollipop 5.0.1 UCUGOC3 firmware.

Update AT&T Galaxy S4 to Android 5.0.1 UCUGOC3 Lollipop OS


  • The following steps are applicable for the AT&T Samsung Galaxy S4 only.
  • While you’re doing the installation process, be sure that the device has at least 60% battery backup.
  • Your device should have proper custom recovery tool like CWM or TWRP before the installation process.
  • Install all the required USB drivers on your PC and USB Debugging Mode on your Smartphone.

Steps to Manually Update AT&T Galaxy S4 to Android 5.0.1 UCUGOC3 Lollipop OS:

Step 1: Download the required files on your device.

Step 2: For obtaining the .cfg file, unzip the above downloaded file.

Step 3: Now, using a USB cable, connect your device with your PC.

Step 4: Move the unzipped file to the internal storage of the device. Remove the USB cord.

Step 5: By using the file manager, you can rename the .cfg file into .zip file.

Step 6: Switch off your device.

Step 7: Go to the Recovery Mode.

Step 8: Choose the “apply update from external storage” option.

Step 9: Wait until the OTA update gets installed on your device manually.

Step 10: Go back to the main menu. Select “reboot system now”. It may take some time for the reboot process to complete though.

Well, it’s done now. You can start enjoying the brand new features of the new official Android 5.0.1 Lollipop UCUGOC3 firmware update on your AT&T Samsung Galaxy S4 through the simple manual update operation.


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