Download stock Android 5.0 Lollipop based TMS5 3.0 ROM on AT&T S5 Active SM-G870A brought a tremendous news for the AT&T Galaxy S5 Active owners having model SM-G870A. Stock modified Android 5.0 Lollipop via TMS5 3.0 ROM is now available for AT&T S5 Active SM-G870A, the ROM is modified and extra bloatware is removed. The Android 6.0.1 TMS5 3.0 ROM for AT&T S5 Active SM-G870A seems to be stable and is packed with latest features so before installing Android 5.0 Lollipop ROM on your AT&T S5 Active SM-G870A we recommend you to visit XDA link and have an overview about the status of TMS5 3.0 custom ROM.

If you think you are good enough to perform such operation with your device then what are you waiting for Just go ahead and follow the below description. We have already posted guides on other devices now in this article following the same process we will install Android 5.0 Lollipop on AT&T S5 Active SM-G870A via TMS5 3.0 ROM custom ROM.

Custom ROM gives you freedom to modify and optimize your device according to your wish. So installing TMS5 3.0 ROM on your AT&T S5 Active SM-G870A you will be able to perform modifications and customization in your device. You can add tweaks and theme your device to give it new look every time you see, some custom ROM also let you overclock the CPU to enhance it’s performance.

Note: The TMS5 3.0 ROM for AT&T S5 Active SM-G870A is currently in the testing stages and you may notice some lags but if you are feeling eager to install then just carry on along with the guide. Remember TMS5 3.0 ROM is a third party custom ROM but not an official/stock firmware by the manufacturer so after installing TMS5 3.0 ROM on AT&T S5 Active SM-G870A if you wish to revert back to stock firmware you can do it any time you want.

How to install Android 5.0 Lollipop on AT&T S5 Active SM-G870A via TMS5 3.0 ROM

Disclaimer: This guide includes flashing custom ROM on your device, it is not an official firmware but will flash the custom firmware. The writer is not responsible for any damage happens to your device during the whole operation neither we are forcing you to perform such operation.

Before you begin:

Installing custom ROM on your device needs some early preparations to be made and these preparations include;

A custom recovery is the most necessary element while installing custom ROMs or any .zip file in your device so a custom recovery like ClockworkMod or TWRP must be installed on your device.

Keep your battery charged or at least your device should contain at least 80% charge before the flashing operation.

Android USB drivers for your device should be installed on your PC, or you can download latest USB drivers for Samsung

If the PC is unable to unable to detect your device after even after installing Android USB drivers for your device, then you need to perform one more step, Enable USB debugging.

To enable USB debugging in your device go to Setting >> Developer options >> USB debugging.

Sometimes “Developer options” are not visible in device settings menu, so what you need to do is, go to Settings >> About device >> Software information and there you will see an option build number. Tap it 7 times until a pop up arises with a message that you are now a developer, that’s it now go back and the Developers option is visible in the settings menu.

Create a Backup of your complete Android device

Backup is the most necessary part for your device you need to create a Nandroid backup of your device through custom recovery. We prefer Nandroid backup over other many apps because you don’t need to download multiple backup apps for specific purpose, the Nandroid backup will let you create backup of your device including; Messages, call log, settings and calendar including whole Android OS. Click the below link to create a Nandroid backup.

How to create a Nandroid backup/restore of your Android device

You can easily restore your backup when ever you wish to do so, this is good in aspect if your device accidentally met some issue during the flashing process.

Once you done with the above preparations now it’s time to flash TMS5 3.0 ROM on your AT&T S5 Active SM-G870A.

Process to install Android 5.0 Lollipop on AT&T S5 Active SM-G870A via TMS5 3.0 custom ROM

Download Android 5.0 Lollipop TMS5 3.0 ROM for AT&T S5 Active SM-G870A: Here

Download Google Apps [Gapps]

Once you successfully downloaded the TMS5 3.0 ROM along Google Apps on PC, Now connect your device to PC and move the downloaded files on the internal storage of your device. [If you downloaded it via phone then skip this step]

Its time to reboot your device into recovery Mode, to do so you can search for it or use hardware buttons combination. (If your device is rooted then its super easy, just visit Google Play and download any third party reboot app for this purpose)

Once your device successfully boots into recovery mode, select the downloaded TMS5 3.0 ROM .zip file and confirm it by swiping the slider for (TWRP) or yes for (CWM).

Wait for the process to complete, now perform the same step to flash Google apps zip file on your device.

Once successfully done with the installation procedure simply reboot your device, please note the first boot up may take 5 to 7 minutes so be patient as things needs to be settled up for boot.

That’s it! Congratulation you have successfully installed Android 5.0 Lollipop on AT&T S5 Active SM-G870A via TMS5 3.0 ROM. Follow us on Facebook/Twitter/Google+.

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