Install /e/OS on a Samsung Galaxy S4 (SCH-I545) - “jfltevzw”

The instructions in this guide will assist you to install /e/OS on your jfltevzw. Please read through the instructions at least once before actually following them, so as to avoid any problems later.

It is important that you know that downgrading Smartphones on OS versions greater than the /e/OS OS version you plan to install, can cause instability or at worst brick some devices. We recommend that you check your current OS version, before attempting the installation.

It is advisable to flash your device only if you know what you are doing and are ok taking the associated risk. All /e/OS builds are provided as best effort, without any guarantee. The /e/OS project and its project members deny any and all responsibility about the consequences of using /e/OS software and or /e/OS services.

Requirements

If required take a backup of all important data from your phone on an external storage device before proceeding.
Do not take a backup on the same device as some of these actions will format the device and delete the backup.
Ensure your phone is charged more than 50%
Check that adb is enabled on your PC. If not you can find the setup instructions here
Download all the files and images mentioned in the download section below before starting the installation
Make sure you have a working data cable to connect your device to the PC. There are cables which are only for charging and do not transfer data.
Enable USB debugging on your device. You can find the instructions here
Make sure that your model is listed in the Smartphone Selector. Check the model supported. Where available, information on the model supported should show as a pop-up when you hover the cursor on the Device name. The model number supported should be the exact same.
Boot your device with the stock OS at least once and check every functionality.

Warning: Make sure that you can send and receive SMS and place and receive calls (also via WiFi and LTE, if available), otherwise it will not work on /e/OS as well. Additionally, some devices require that VoLTE/VoWiFi be utilized once on stock to provision IMS.

Please share your experience , suggest tips or changes to this install guide documentation by visiting the Galaxy S4 (SCH-I545) specific topic on our community forum.

To report issues in /e/OS please refer this guide

Downloads for jfltevzw

/e/OS Recovery for dev build
/e/OS build : R dev

To understand the difference between /e/OS builds check this guide

Caution: Your device must be on bootloader version: I545VRUAMDK otherwise the instructions found in this page will not work. The current bootloader version can be checked by running the command getprop ro.bootloader in a terminal app or an adb shell from a command prompt (on Windows) or terminal (on Linux or macOS) window.

Rooting your device

Important: The device must be rooted before proceeding any further.

Download TowelRoot from here.
1. Click the large lambda symbol to download the apk.
2. Install and run the apk to achieve root.

Installing a custom recovery using `dd`

Warning: Installing a custom recovery will erase all data on your device! Before proceeding, ensure the data you would like to retain is backed up to your PC and/or a online drive.

Place the recovery image file on the root of /sdcard (USB debugging have to be enabled in developer options) :
```
 adb push recoveryfilename.img /sdcard/recoveryfilename.img
```
Now, open an adb shell from a command prompt (on Windows) or terminal (on Linux or macOS) window. In that shell, type the following commands:
```
 su
 dd if=/sdcard/recoveryfilename.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
```
Manually reboot into recovery With the device powered off, hold Volume Down + Power. Release all buttons and press Power again as soon as the LG logo appears.
Accept the factory reset prompt using the hardware buttons. If you have done everything correctly, this will not actually reset your device but instead will install the custom recovery.

Steps to install /e/OS from recovery

Tip: Use the volume keys to navigate and power key to select

Tip: Use the volume up key to choose the arrow at the top to go back to main screen

Tip: If your PC is unable to detect your device with adb in the /e/OS recovery main screen tap Advanced » Enable adb

Format the device

On /e/OS Recovery main screen:

Select Factory reset
Select Format data / Factory reset option
Next screen will display a warning that this action cannot be undone
Select Format data to proceed or Cancel if you want to go back
If you selected Format data, the format process will complete

Tip: You will see text in small font on the lower left side of the screen mentioning format progress

The small font text would be similar to this
```
 Wiping data
 Formatting/data
 Formatting/cache
 Data wipe complete
```
Display will now return to the Factory Reset screen

Install /e/OS

In /e/OS recovery main screen:

Select Apply Update and in next screen Apply update from adb
In the next screen, the device is now in sideload mode

Note at this point the Cancel option is highlighted that does not mean you have canceled the action. The device is in adb sideload mode.
On your PC type begin adb sideload. Type the below command in a console

adb sideload downloaded_file_name.zip

Replace downloaded_file_name.zip with the name of the /e/OS file you downloaded in the previous section
Press enter key on the keyboard to start the sideloading The screen will show the progress percentage…This might pause at 47%
Give it some time
The PC console will now display Total xfer: 1.00x
The phone screen will now display some text with a message similar to

Script succeeded result was [1.000000]

This means that the install was successful.

Reboot the device