Update AT&T Galaxy S5 SM-G900A to Android 5.1.1 Lollipop Manually (G900AUCU3BOC4 firmware)


(We apologies for the wrong title, this is the Android 5.0 Lollipop update. We have updated a new post click here to install Android 5.1.1 Lollipop firmware on AT&T Galaxy S5 SM-G900A with G900AUCU4COI5 firmware)

Android 5.0 Lollipop G900AUCU3BOC4 firmware has been released for AT&T Galaxy S5 SM-G900A. You can follow our guide here at Thunderztech.com to install this update manually on your AT&T Galaxy S5 using Odin without waiting for the OTA update notification. Samsung has rolled out this update for US AT&T carrier, other regions are still in the waiting list but if you are getting impatient to update your AT&T Galaxy S5 to Android 5.0 Lollipop update just go ahead and follow the below description.

Previously we has posted the same guides for other Samsung Galaxy devices, now in this guide we are going to use the same process to update AT&T Galaxy S5 on Android 5.0 Lollipop. Below you can find information about your device model number and the firmware information, just keep scrolling down.

G900AUCU3BOC4 firmware details:

Model Name: Samsung Galaxy S5
Model: SM-G900A
Version: Android 5.0 Lollipop

How to update AT&T Galaxy S5 SM-G900A manually using ODIN

Before you Begin:

To update your AT&T Galaxy S5 SM-G900A via Odin tools you need to download necessary files which you are going to use in the update process.


  • Download and Extract Odin 3.10
  • Download Samsung USB drivers
  • Please ensure your phone battery should be charged at minimum 60%
  • Enable USB Debugging, go to Settings >> Developer Options >> USB debugging

Download and Extract Android 5.0 Lollipop G900AUCU3BOC4 firmware file from the below provided links.

Process to update your AT&T Galaxy S5 SM-G900A to Android 5.0 Lollipop

If you are new to this tool then you have to pay attention on the step by step sequence to avoid any mishap during the update process.

Click Odin3.10.exe to run the Odin tool.

Now boot your device into Download Mode by turning off your device properly and turn it on again by pressing and holding Home Button+Volume Down +Power Key simultaneously until you see a warning now press Volume up to enter Download Mode.

Connect your device to PC via USB cable.

If everything goes well Odin will detect your device and the ID:COM box should turn blue which indicates that your device has been successfully added.


Please make sure “Auto Reboot & F.Reset Time” options are checked in the options Tab in Odin screen.

Now click the AP tab and select the firmware file that you have downloaded above.

Hit the start button at the bottom and wait for the installation process to complete.


Once the firmware update process is completed you will see a “PASS” message in the ID:COM box (as shown).

Your device will automatically reboot.

That’s it! AT&T Galaxy S5 SM-G900A is successfully updated to Android 5.0 Lollipop G900AUCU3BOC4 firmware. If you have any query feel free to contact us by posting your queries in the below provided comment section. Follow us on Facebook/Twitter/Google+ for future update.

A Software Engineer who loves to hang around latest gadgets and writes his own experiences to get the best possible and accurate information.
  1. Reply raymond November 27, 2015 at 3:34 pm

    the download link dont work

  2. Reply Mit January 11, 2016 at 1:18 pm

    Will my phone work with another sim (not at&t) after upgrading my OS by odin?

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