Being a mid range Android based device, the Samsung Galaxy Ace 3 LTE will no longer receive official updates. So, that means you won’t be able to experience future features and processes that might be extremely useful even on an outdated device, such as the Galaxy Ace 3. Well, if you want to change that, and if you want to be up to date without having to buy another smartphone, you can learn how to install a custom ROM firmware on your own phone. In this way, getting the latest Android versions is once more possible.

I am not talking about any Android version, but about the latest one: Marshmallow 6.0. Yes, that’s right, you can run Android M on your own Samsung Galaxy Ace 3 LTE. That’s possible only if you follow this tutorial and learn how to install the CM 13 custom ROM firmware. Unfortunately, it is not the official CyanogenMod release, as currently the CM13 platform is still developed by those of xda-developers. However, don’t worry, as this Android 6.0 Marshmallow system is stable enough for a daily usage.

In fact, with CM 13 installed, your Galaxy Ace 3 LTE can run better and faster thanks to the new features and processes that will be added (the system will be optimized, the bloatware removed and important customization operations ensured). You see, the Android M firmware has been customized and optimized especially for your device, so that’s why everything will run without major issues – being an early build, you might still find minor bugs or software related issues (however everything will be soon resolved by the devs).

If you want to test the CyanogenMod OS but you are afraid you are going to be stuck on a buggy firmware, before applying the Android 6.0 Marshmallow OS, you should make a Nandroid backup for your Samsung Galaxy Ace 3 LTE. In this way you can save the current firmware that runs on your phone and you can then use it for downgrading back to stock – if the custom ROM will not run as expected. The Nandroid backup can be ensured through a custom recovery image, a software which will also be required on the update operation.

Therefore, CWM, TWRP or any other custom recovery software must run on your Galaxy Ace 3. Also, your Samsung branded device must be rooted or else you won’t be able to install this AOSP based Android M firmware. So, before doing anything else, unlock your smartphone (through the root process) and install a custom recovery image in its system. Then, return here and resume the guidelines from below.

Installing a custom ROM comes with a few risks. Being an unofficial update, flashing CM 13 will void the warranty from your Ace 3 LTE. So, starting from now you won’t be able to reclaim your phone’s warranty – taking your device back to service will imply in paying for further technical assistance; that’s why, you might want to learn how to manually fix software related issues on your Android device.

Moreover, the system of your smartphone will be wiped out during the update operation; so you should backup your Galaxy Ace 3 LTE before doing anything else, especially if you have important data saved on your phone – contacts, call logs, texts, images, videos, audio files, EFS, market apps, internet settings, calendar info, saved passwords, IMEI / NVRAM and so on. Note: you can easily backup your data by using a cloud storage software, a computer, a SD card or any other backup and restore app from Google Play.

Other things to do before starting the flashing process from below:

  • Make sure that a computer is near you; your phone and its USB cable will also be required.
  • On your computer you will have to download the update file and compatible Google Apps – the download operation might be interrupted by security features, so you might want to temporarily turn off Firewall protection.
  • On your Ace 3 go to “menu – settings – about phone” and tap several times on Built Number; in this way you can enable Developer Options.
  • Also from your phone access “menu – settings – developer options” and check the USB debugging mode.
  • Make sure you download the CM 13 Android 6.0 Marshmallow file from below only for the Samsung Galaxy Ace 3 LTE.
  • Charge your smartphone or at least make sure that there is at least 50% power left – else your phone might get turned off, and bricked, during the update operation.

How to Update Galaxy Ace 3 LTE with CM13 Android 6.0 Marshmallow ROM firmware

  1. Download the CM13 firmware file from this page. Then, get Google Apps package.
  2. Place the files on your computer, preferable on desktop.
  3. Plug in the USB cable and connect your Ace 3 with your computer.
  4. Transfer the downloaded files on your phone’s SD card and the remove the USB cord.
  5. Power off your smartphone, wait a few seconds and then enter recovery mode.
  6. From recovery make a hard reset and clear cache; basically you have to select “wipe data factory reset”, “wipe cache partition” and “wipe dalvik cache”.
  7. When done, go back to main menu of recovery and select “install zip from SD card” followed by “choose zip from SD card”.
  8. Pick the Android 6.0 Marshmallow firmware file and flash it on your Samsung Galaxy Ace 3 LTE.
  9. After applying the CM13 ROM, flash Google Apps package.
  10. In the end, from main menu of recovery select “reboot system now”.

That was all for now; you can safely run and test the Android 6.0 Marshmallow firmware on your own Galaxy Ace 3 LTE. Enjoy.

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