As you probably know that one of the highest Android device form AT&T, Samsung Galaxy S5 model number G900F has received a new update named Android 4.4.2 KitKat update.
During this step by step guide we will show you how easily install the update by using a manual method without bricking the device.
This guide is provided only for devices that didn’t received the latest update build and do now want to wait until the latest UCU1ANCE KitKat firmware will be released by using a OTA method.
This post is provided only for the AT&T model of Samsung Galaxy S5 device model number (SM – G900A).
Do not use the same to update any other incorrect version of Galaxy S5 device.
Download and install the suitable USB drivers on your PC.
Next, enable the USB Debugging mode from Developer Options.
Disable or uninstall any antivirus applications and Samsung KIES software from your PC.
If the S5 device is a rooted one, then the update will revoke the root access.
Once the new update is applied the warranty will be restored.
In case you have a custom ROM on a custom Recovery installed on your device then the new update will remove them totally.
The custom Recovery tool will be replaced with a stock Recovery.
If the smartphone runs on an official Android OS, then you need to know that no files should deleted in the flashing process.
Make sure that the charge level of the device’s battery is more that 65 %.
Use this step by step guide only if you have enough experience on this kind of flashing operations.
Do not skip any steps from here and read the entire post.
This guide is provide only for educational or instructional purpose, so do not held liable or responsible for any data lost or damage of your device during or after the flashing process. Use this guide only on your own risk.
How to install UCU1ANCE Android 4.4.2 Official Update for AT&T Galaxy S5:
Download the new Android 4.4.2 KitKat G900AUCU1ANCE firmware file from here. The firmware file is from SamMobile website and for downloading the same is needed to have an account at their website.
The download file has the tar.md5 extension.
Now, extract the contents of the downloaded zip file and save it on your PC desktop screen.
Download the ODIN3 v3.09 software from here.
Odin will be used to install the new ROM for your device.
Now, extract the ODIN contents and save the files in a single folder on your PC.