How to Root

Install Android 5.1 Lollipop On Galaxy S4 I9500 With EuphoriaOS Custom ROM

Written by Hassan Abbas

EuphoriaOS custom ROM is now available for the Galaxy S4 with model number I9500. EuphroiaOS ROM is based on the latest Android OS version 5.1 Lollipop that brings AOSP-like experience to taste including various cool features. Here we’ve given a quick list of its features below. If you want to get the latest Android 5.1 Lollipop on your Galaxy S4 I9500 then follow the given instructions on how to install Android 5.1 Lollipop based EuphroiaOS Custom ROM on S4 I9500.

Make sure that EuphriaOS ROM is developed by third-party developers. It is not officially released by Samsung. So you’ll need to have a custom recovery like ClockworkMod recovery already installed in order to flash the custom firmware build and Gapps zipped files on the phone. EuphriaOS custom ROM is currently in testing stages so you might face some bugs or not functioning features but its developers are working on it to fix issues. Are you ready to update your Galaxy S4?

Android 5.1 EuphoriaOS Lollipop ROM Features:

This custom ROM brings a lot of new and awesome features which is based on Android 5.1 Lollipop. Have a look at the main features in EuphoriaOS ROM:

  • AOSP Based
  • Un-encrypted
  • Disabled tether checking
  • IME selector notification control
  • Advanced reboot
  • Adb notification control
  • Adb over network
  • Long press back to kill
  • CPU info overlay
  • Status bar brightness control
  • Superuser built-in
  • Show battery percent
  • Option to disable lock screen carrier label


This guide containing the Android 5.1 EuphoriaOS Lollipop ROM file and instructions can be used only with the Galaxy S4 I9500. Check the model number of your Galaxy S4, if it is I9500 then go ahead to install it, otherwise not. Trying a wrong firmware file on any other variant may brick it. You should verify the device’s model number first.


We will not be responsible for any kind of damage occurred to your Galaxy S4 I9500 during or after the installation of Android 5.1 EuphoriaOS Lollipop ROM. Proceed at your own risk.


  • Take a proper backup of all your important data and settings on the Galaxy S4 before proceeding to the installation using a custom recovery, as this tutorial will wipe out all your data.
  • Download and install the correct Samsung Galaxy S4 USB Drivers on the PC.
  • Enable USB Debugging Mode on the Galaxy S4 by navigating to Settings > Developer Options.
  • The Galaxy S4 I9500 should be rooted in the latest version of a custom recovery like CWM or TWRP installed on it.
  • The bootloader of your phone should be unlocked.
  • Check the battery level of your Galaxy S4, it should be charged at least about 80% to prevent unexpected shutdowns while installation.

Required Files:

Procedure to Update Galaxy S4 I9500 to Android 5.1 EuphroiaOS Lollipop Custom ROM:

Follow the given step by step guide to install Android 5.1 EuphoriaOS Lollipop custom firmware on Galaxy S4 I9500:

EuphriaOS Lollipop

1:- Download Android 5.1 EuphoriaOS ROM and Google Apps on the desktop of your PC for Galaxy S4 (above-mentioned links).

2:- Plug your Galaxy S4 with the PC and mount the Mass USB memory of the phone.

3:- Transfer the downloaded Android 5.1 EuphoriaOS ROM and Google Apps zipped files to the root folder of your SD card.

4:- Now unplug the device from PC and power OFF the Galaxy S4 in order to boot into Recovery Mode.

5:- Now power ON the S4 by pressing and holding Volume Up + Home + Power keys at the same time.

6:- While your Galaxy S4 I9500 is now in ClockworkMod Recovery, choose to perform a full data wipe by selecting “wipe data/factory reset”, “wipe cache partition” and Dalvik cache as well.

Navigate to “advanced” and then select “wipe Dalvik cache”.


Wipe Dalvik Cache will help you to prevent boot loops or any other ROM related errors.

7:- Navigate to the main recovery menu and select “install zip from SD card” > “choose zip from sd card” and locate the Android 5.1 EuphoriaOS custom ROM .zip file which you have already transferred to the root folder of your SD Card. Use the Power key to select it and confirm the installation to begin on the next screen.

8:- Install Google Apps Package on your Galaxy S4 by repeating the above steps.

9:- Once the ROM installation completes, go to “+++++Go Back+++++” and from the recovery menu, select “reboot system now” to reboot the phone.

Your Galaxy S4 I9500 will take some time about 4 to 5 minutes to boots up for the first time after installation.

Done! You’ve successfully updated Galaxy S4 to Android 5.1 EuphoriaOS Lollipop custom ROM.


Let us know in the comments area below if you have any queries or issue while installing EuphoriaOS custom firmware build based on 5.1 Lollipop on your I9500.

Till then! Keep Smiling 🙂

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About the author

Hassan Abbas

Tech enthusiast with too many items on his wish-list and not nearly enough money! Specializing in all things tech, with a slight Apple bent he has been writing for various blogs for the best part of (too many) years

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