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How to Install CM 12.1 Android 5.1.1 Stable ROM for Galaxy S5 Duos LTE.

The CM 12.1 Stable or Snapshot builds are better optimized and bug-free when compared to the CM 12.1 Nightly releases. These builds are based on the AOSP Android 5.1.1 releases, and this means that you will get all the stock Lollipop functions along with extra CyanogenMod-based features and components.

÷ Prerequisites:

•Use this tutorial only with the Samsung Galaxy S5 LTE Duos.
– the models supported are SM- G900FD and SM – G900MD.
– check the version of your device under Settings> About Phone menu.

•Your device has to be on a rooted firmware.

•Also, a CWM or TWRP-based Custom Recovery needs to be installed on it.
– the installed Recovery has to be upgraded to its latest version, so that it will allow you to flash a brand new Android 5.1.1-based custom ROM.

•Check the battery charge of your device, it has to be over 50%, as it will prevent the smartphone from powering off during installation.

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Android Custom ROM fix ® provide various Firmware Updates and Rooting process along with Custom ROM,Modes,file are all belong  to their owners/developers. The autor of this site or the developers are not responsible,  if you damage or brick your device.Do it on your own risk and follow the instruction properly.

÷ How to Install CM 12.1 Android 5.1.1 Stable ROM for Galaxy S5 Duos LTE:

1- Download the CM 12.1 SNAPSHOT zip & Gapps for Android 5.1.1 ROMs .

2- Transfer both zip files on your phone’s internal storage.
– you shouldn’t unzip the archived files.
– disconnect your phone from computer after the files are successfully moved on your phone.

3- Power off your smartphone and thenboot it in Custom Recovery Mode.

4- Create the NANDROID Backup for the installed ROM:
– CWM: select ‘backup and restore’.
– for TWRP use the ‘backup’ option.
– confirm.Factory Reset the device:
– CWM: select ‘wipe data/ factory reset’.
– TWRP: select ‘wipe’ options.
– confirm.

5- Now you can install the CM 12.1 Android 5.1.1 ROM:
– CWM: select ‘install zip from sdcard’, then ‘choose zip from sdcard’.
– TWRP: select ‘install’ options.

6- Find the CM 12.1 SNAPSHOT zip and confirm its installation process.

7- Flash the Gapps zip too after the ROM is done flashing all of its files.

8- Reboot your Galaxy S5 Duos device in normal mode after all the new files are successfully installed.
– note that the first boot will take at least 10 minutes to load.Use your Google account or create a new CM profile in order to regain complete control over your device.

In case you need more help completing this guide, then you should use the comments field below.


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