Update Galaxy S4 LTE-A to Android 5.0.2 Lollipop via CyanogenMod 12 Nightly ROM

Samsung Galaxy S4 LTE-A (GT-I9506) can now be updated to the latest Android 5.0.2 Lollipop with CyanogenMod 12 Nightly ROM. This CM12 ROM is based on the original AOSP that come with stock Android features in a bloatware free package. Galaxy S4 GT-I9506  has yet to receive an official Android 5.0.2 Lollipop update but if you can’t wait for the official update from Samsung and wish to get the Android Lollipop on your Galaxy S4 then follow the given step-by-step guide to update Galaxy S4 to Android 5.0.2 Lollipop CM12 ROM. Installing Nightly ROM has an advantage that the expected bugs will be fixed soon.

So if you have Galaxy S4 LTE-A and want to get this latest Android OS experience by installing 5.0.2 Lollipop via Cyanogen 12 Nightly custom, ROM then go ahead and follow these instructions. Remember that this ROM is developed by the third-party developers, not officially released by Samsung. Thus some bugs are expected, and many features might not work properly yet, but those developers are working hard to fixed its bugs soon. You’ll require having a custom recovery like CWM or TWRP already installed on your Galaxy S4 LTE-A to flash this CM12 Nightly ROM based Android 5.0.2

Flash Samsung Galaxy S4 LTE-A (GT-I9506) with CM12 based 5.0.2 Lollipop


This guide containing the Android 5.0.2 CM12 Nightly Lollipop ROM are working only with the Galaxy S4 LTE-A GT-I9506 (International Variants). You can check the model number of your phone from Settings > About Phone.


AndroidBlog will not be held responsible for any damage, or mishap happened to your Galaxy S4 LTE-A during or after the installation process of Android 5.0.2 CyanogenMod 12 Nightly Lollipop custom ROM. Proceed at your risk.


  • Make a proper backup of all the important data and settings on the phone with a recommended custom recovery such as CWM or TWRP recovery before proceeding to the installation instructions.
  • Make sure that you’ve correctly installed USB Drivers for Galaxy S4 LTE-A GT-I9506 on the PC.
  • Enable USB Debugging Mode on the Galaxy S4 by navigating to Settings > Developer Options.
  • Check the battery level of your device; it should be charged at least about 80%.
  • The Galaxy S4 should be rooted with a custom recovery (CWM) installed.
  • The bootloader of your device should be unlocked.

Required Files:

  • Download Android 5.0.2 CyanogenMod 12 Nightly Lollipop ROM For Galaxy S4 LTE-A
  • Download Google Apps

Steps to Update Galaxy S4 LTE-A (GT-I9506) to Android5.0.2 CyanogenMod 12 ROM:

Step No 1: – First, connect your Galaxy S4 LTE-A device with the PC using its USB data cable and mount the USB Mass Storage of the phone.

Step No 2: – Transfer the downloaded CyanogenMod 12 Android 5.0 custom ROM to the root folder of the SD Card.

Step No 3: – Disconnect your Galaxy S4 once the ROM .zip file is transferred. Turn OFF the device in order to boot into Recovery Mode.

Step No 4: – Turn ON the Galaxy S4 LTE-A by pressing and holding Volume up + Home + Power keys at the same for a few seconds till the device enters into Recovery Mode.

Step No 5: – While the device is in CWM recovery, perform Full Data Wipe by selecting Wipe Data/Factory Reset, Wipe Cache Partition and Wipe Dalvik Cache also by navigating to Advanced > Wipe Dalvik Cache.

Note: – Wipe Dalvik Cache will help you to prevent the boot loops and ROM related issues while installing the ROM on your Galaxy S4 LTE-A (GT-I9506).

Step No 6: – Go back to the main menu of Recovery and select Install Zip from SD card > Choose Zip from SD card.

Step No 7: – Locate the CM12 Nightly ROM zipped file which you have already transferred to the root folder of your SD Card in the previous step above. Select it and confirm to proceed the ROM installation process to start.

Step No 8: – Next, install Google Apps (Gapps) package on your Galaxy S4 by repeating the same procedure as in Step 6 and 7.

9: – After the ROM and Google Apps installation is finished, go to “+++++Go Back+++++” and from the Recovery Menu, select Reboot System Now.

Your Galaxy S4 LTE-A will be restarted now, and it may take about 4 to 5 minutes to boot for the first time after installation.

That’s All! You’ve updated Galaxy S4 LTE-A (GT-I9506) to the latest Android 5.0.2 Lollipop using CM12 custom ROM.

Don’t hesitate to let us know in the comments area below if you have any query or trouble while installing this CM12 Nightly build on your Galaxy S4 GT-I9506).


Aamir Jamal

An Android Geek and audiophile who love to read and write reviews/tutorials about gadgets and new tech stuff. He has written 1007 guides and other posts.

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One Comment

  1. Bootloop! Tried to go back to stock via Odin, bootloop! Tried to recover from nandroid-backup, bootloop! Seems nothing works. Help please!!

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