5 Dec 2015

Android 6.0 marshmallow based Cyanogenmod 13 custom rom on samsung galaxy s4 Jflte

Samsung has recently announced that they are about to release android 6.0 that is marshmallow update for bunch of its flagship devices. Samsung galaxy s4 is one of those device which might receive the update.But as you know being a samsung flag for the year 2013 there are lot of variants of galaxy s4 which means not all s4 variants receive it at same time.

It might take lot of time from now for the update to receive but if you want to try latest version of android version on your samsung galaxy s4 there is a workaround but its risky and some of you guys already know how to do it.

If you an android enthusiast then you might be waiting for the official cyanogenmod 13 to come out. There are no official build of the same yet.But we are lucky to have an unofficial build for samsung galaxy s4.This build is specific to jflte variant of galaxy s4 which houses a snapdragon 600 processor instead of samsung's in-house exynos chipset.

If you own a exynos device then this is not for you.Its better if you stay away from this.If you own a snapdragon 600 based and don't know how to install this then don't worry at all in this guide you will see how to have android marshmallow installed on your galaxy s4 jflte.
But before proceeding further:
  • Check you samsung galaxy s4 model number by going into about device and confirm that you are using jflte variant which houses a snapdragon 600 processor.
  • Make sure that kies is already installed on your computer.If you don't have then do install them.
  • You must have updated it to official software that is already available if you are starting from scratch.
  • Root: You need to have root access on your samsung galaxy s4 to install cyanogenmod 13 custom rom.If not you have to follow the whole guide.
  • Backup:Backup all your data which includes contacts,apps,photos videos etc everything to computer or any cloud networks as installing CM 13 on galaxy s4 jflte will erase all the data on your handset.
  • Backup Efs partitions: This is for those who already have twrp installed.Backup all your efs partition of your samsung device on existing rom.Just in case if you loose signal or imei  you can just restore it back.
  • Battery: Charge your galaxy s4 to 100% so that you wont encounter any battery related problems while updating it.
  • Downloads: Android marshmallow for samsung galaxy s4 (androidfilehost mirror) on your computer or device itself.If you want gapps download them too.
  • Recovery: You need a custom recovery like twrp already installed on your galaxy s4.

Marshmallow based CM 13 custom rom for samsung galaxy s4 Jflte:

As this rom is not yet official one you may not find all the features of original cyanogenmod offers and also this rom is some what buggy. Though all the features work properly there is an issue with camera.Both cameras wont work at all.But if you are ok with this then try this on your s4.
Cyanogenmod 13 custom rom on samsung galaxy s4 Jflte
Cyanogenmod 13 custom rom on samsung galaxy s4 Jflte
This rom is originally complied by an xda senior member "AntaresOne", a big thanks to him for taking his time out for compiling this rom for galaxy s4.All the standard features of Marshmallow are available in this rom.If you don't know the features if I have listed them below do check them out.
Features of android marshmallow:
  • System ui tuner: This is new feature that let you tweak ui a bit but has been hidden just like developer option.If you want to add it to setting app,swipe down the notification panel and on top you will notice a gear icon.Press and hold it and you will notice that it starts spinning.Just leave it once you notice the vigorous spin and you will see a toast message "system ui tuner" added to settings.
  • There are ton of brand new wallpapers.
  • Google launcher now has vertical scrolling instead of horizontal.
  • Multi window: Google finally introduced multi window concept in tablet version of os.You can run two apps in a single window.Activating multi window is also too easy.When you open recents you will notice there is another option beside the closing button on cards.Press on it and activate multi window.But this multi window is not configurable which means adjust width of apps that are running.
  • Phone short cut on lock screen is replaced with google now.
  • Search bar in settings menu.
  • New volume panel: You can now adjust volume of media, call and notification from single window .This feature is absent in previous versions of android though present in most of the oem provided firmwares.
  • Auto rotation on home screen is also added which you can find in launcher settings.
  • Now on tap: If you use google now frequently this feature might help you a lot.Usually when you press and hold on home button it will take you to google now.If you enable this feature when you try to access google now on any app it load some related suggestions along with some google now card.
  • Screen shot notification will also have delete button along with share option.
  • Memory option: This is available in settings .It gives you memory usage on your device from last "3hrs or 6 hrs or 1 day".
  • App permission manger is the major thing in android m.This lets you to block certain permission so that the app cannot access them.like if you don't want facebook to access your bluetooth you can now do it with out rooting your device.
These are some of the newly added features in android m marshmallow and there are lot of changes beneath which could improve performance and also battery life but as you know this is an early build which might not run as you expect.

Flash marshmallow based cm 13 on galaxy s4 using twrp recovery:

  • Download cm 13 rom for galaxy s4 (cm-13.0-20151108-UNOFFICIAL-jflte.zip)and Gapps transfer them to sdcard or internal storage of device.
  • Power of the device completely and wait for few seconds to confirm that it is completely off.
  • Using button combinations reboot into recovery or use quick boot app to enter recovery.
  • Once you are in twrp recovery click on backup and choose all the partitions and make bakcup first. It might about 5 to 10 minutes for backup to complete and do not interrupt backup process.
  • Now click on wipe and select system,data,cache and dalvik cache options.Don't select internal storage.
  • Once you have wiped required partitions go back and click on install.
  • Navigate to location where you have placed your marshmallow zip file and select it.
  • Swipe to confirm flash and wait for 5 minutes for process to complete.
  • Again click on install and select gapps this time,swipe to confirm to flash.
  • Once gapps are flashed reboot to system.Wait at least 15 minutes for initial boot to complete and once done you can explore its features.
Once the rom boots up you will explore the rom.though it is buggy you can use it for sometime for sure.If you have any other queries regarding installing marshmallow based cyanogenmod 13(cm 13) on your samsung galaxy s4 jflte leave a comment below. 
Android 6.0 marshmallow based Cyanogenmod 13 custom rom on samsung galaxy s4 Jflte Reviewed by Radha Krishna on 18:38 Rating: 5 Samsung has recently announced that they are about to release android 6.0 that is marshmallow update for bunch of its flagship devices. Sam...

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