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• During this step by step guide,  we will show you how easily to install the Official SlimKat 4.4.2 Nightly Builds on Samsung Galaxy S4 I9505 device. Note that this guide is for advanced Android users only.
• This guide is compatible only with Samsung Galaxy S4 LTE model number I9505 device with the Snapdragon 600 the International variant. So by knowing that this step by step guide will not be compatible with the US Galaxy S4 LTE versions of Samsung Galaxy S4 device nor with the I9505 (Exynos) model of the S4 smartphone.
• The Samsung Galaxy S4 I9505 device has to be a rooted one and to have the latest CWM Recovery Image version installed on it. We don’t test this guide with the TWRP Recovery image.
• Backup all your data stored into S4 device and create a full NANDROID Backup for the existent installed ROM, this backup will represent a restore point in case you don’t like the new custom ROM or something work wrong.
• The step by step guide will contain a Factory Reset step that will help the user to apply a clean installation for the new custom ROM.
• Important: The Factory Reset action will wipe all data from the system partition, but the internal/external storage cards will not be affected by this Factory Reset step.
• Backup all your application installed on the S4 device, SMS text messages by using the Helium application, a step by step guide about how to do this is available here.
• Save your contacts from your device, to do this you need to sync contacts info with your Gmail account. Guide here.
• Ensure that the device’s battery charge level is more that 60 %, this will prevent your device to take a forced power off in the middle of the flashing process.
• This guide is provided only for educational and instructional provide, so do not blame us in case something wrong is happen by applying this guide on your device, we cannot be held liable or responsible for any data lost or damage of your device during or after the flashing process.
• Do not skip any steps from this guide.
• From Developer Option menu, enable the USB Debugging mode. Developer Option, in some cases might be hidden, so you should open the Settings menu, then More and go to About Phone and press Build Number seven times.
• If you cannot complete this step by step guide, then you can use our comments section for more help.

How to install SlimKat the Official Nightly custom ROM for Galaxy S4 LTE:

1. Firstly, download the SlimKat custom ROM zip from here, download the latest build available.
2. Secondly, download Gapps for SlimKat ROM from here.
3. Now, connect the Samsung Galaxy S4 LTE I9505 device to your computer.
4. Move (Copy/Paste) the both downloaded zip files to the device’s internal storage. Ensure that you don’t unzip the contents.
5. Once the both files are copied successfully, disconnect the smartphone from the computer.
6. Turn off the smartphone now.
7. Boot the device in CWM or TWRP Recovery Mode. Guide here.
8. Create the Nandroid ROM backup for your existent ROM. To do this you should select ‘backup and restore’, then give a name to the file and confirm the process.
9. Apply the Factory Reset, by selecting ‘wipe data/ factory reset’ and confirm. Then you need to use the ‘format /system’ option too.
10. Next, select ‘install zip from sdcard’, then ‘choose zip from sdcard’ find the ROM file and confirm the installation to install the SlimKat 4.4.2 Weekly custom ROM.
11. Once the new custom ROM is flashed you need to repeat step 10 actions to flash the Gapps zip file.
12. After the both files are successfully installed, then you can return to the main Recovery menu.
13. From the main Recovery menu reboot the smartphone now into normal mode.
14. The first boot process will takes around five minutes to be done. So, do not press any buttons until the first home screen to appear.
15. Now, put your Google account info when you’re asked and take control over the phone.

• All files on the phone Samsung S4 needs to be backed up manually and not via the PC Suite.
• SMS can be backed up via the "SMS Backup & Restore app".
• Contacts can be backed up by synchronizing and transferring them to the Gmail app.
• Call logs can be backed up via the "Call Log and Restore" app.
• Images, songs, videos and other important files can be transferred safely to SD memory cards Internal / External.
• APN and MMS Settings - Applications -> Settings> Wireless and Network -> Mobile Networks -> Access Point Names.
• The next step Settings-> Applications-> Development-> USB debugging "mode to enable USB Debugging.
• There should be adequate power in the handset to avoid hansdset dead in the middle of the routing process. The expected minimum power in the device is 30%.

• Procedure to Update Galaxy S4 XXUAMDM I9505 with Jellybean 4.2.2 Firmware : Have you mendownlod two applications to upgrade the Firmware 4.2.2 Jellybean at this address : http://www.hotfile.com/dl/204771041/f3c594c/I9505XXUAMDM_I9505OXAAMDM_DBT.zip.html and one lago Odin here : https:// hotfile.com/dl/196702311/668088d/Odin307.zip.html . Both applications installed on each computer after downloading it .

• Furthermore , you can open the Odin on their PC and restart your Samsung handset S4 , so Odin set to S4 in download mode .
• Odin can complete the download to shut down Galaxy S4 and then simultaneously hold the Volume Down Rocker Key + Menu button and then Switch ON handset . Once the download is complete , the download appears as Green Robot menu where you can release your fingers from the key pair
• Then you will need to connect your phone to your PC via USB cable accordingly. Once this operation is complete , you can visually see the ID : COM section in the Yellow or Green flashing , showing condition loaded successfully .
• Now , you need to click on the PDA to select the tar file , which will be acquired as a result of the extraction of the firmware update in the first step .
• Click " Start" to begin the firmware update process . Once the firmware is updated successfully , the device will automatically reboot within 2 -3 minutes . Reboot the whole process will take about 3-4 minutes . After the boot device and the home screen is displayed , you can disconnect the device from the computer .
• You can check if the device is rebooted or not , by downloading the app " Root Checker " from the Google Store .