Having the root access of an Android device is what essentially makes Android world going. Not many like to stick to stock capabilities andfunctionality. But OEMs seem to despise it and hence the losing of warranty with rooting your device. Thankfully though, Samsung smart phones aren't very hard ones to unroot and reclaim warranty when you need to. Follow this tutorial to unrootSamsung Galaxy S4 and reclaim warranty of your Android phone. This tutorial applies to every variant of SGS4and also ends with some instructions to fix bootloop problem.

Required files and prerequisites to unroot Samsung Galaxy S4 and reclaim warranty:

Required files: Please select the file appropriate for your SGS4 variant. To check your device model, go toSettings>More tab>About

Samsung Galaxy S4 international GT-I9500:downloadGalaxy S4 international LTEGT-I9505:downloadChina Unicom Galaxy S4 Duos GT-I9502:downloadAT&T Galaxy S4 SGH-I337: downloadCanadian Galaxy S4 GT-I337M:downloadT-Mobile USA Galaxy S4SGH-M919:downloadVerizon GalaxyS4SCH-I545: downloadSprint Galaxy S4SPH-L720: downloadU.S. Cellular Galaxy S4SCH-R970: download

To reclaim warranty on your Galaxy S4, download the Triangle Away app from Play Store. Also download theOdin3_v3.04.ZipODIN tool. Download therelevant firmwarefrom thislinkaccording to your device model, country code.

Create a backup of all important data in your Galaxy device.Download and install USB drivers for Galaxy S4 in your computer.Enable USB debugging option by pressingMenu>Settings>Applications. Navigate and tap onDeveloper Optionsto ensure thatUSB Debuggingis enabled.Ensure that your SGS4 carries more than 70% of charge.

How to unroot your Samsung Galaxy S4:

Open the app drawerand runTriangle Away app downloaded earlier and follow the on screen instructions to reset the flash binary counter to zero.Triangle Away app is capable of making yourdevice systemthink that it is not rooted thus enabling you to reclaim warranty.To completely unroot your Samsung Galaxy phone, boot into Downloadmode: press and holdVolume Down, CenterandPowerkeys together for a few seconds until you see a warning screen. Now press Volume Upto enter into Download mode.Open ODIN folder and run the exe. Connect your SGS4 to PC using a data cable.The device drivers would be installed and then Odin will detect the phone indicated by the ID:COM port turning to Blue and an “Added!!” message shown in themessage box on Odin.Ensure that only Auto RebootandF Reset Timecheckboxes are selected. Now click on PDAand select the firmware file with.tar.md5extension.Once selected and checking the settings, press theSTARTbutton to initiate installation.Once the installation is successfully finished, you will get aPASS!!message in Odin and your SGS4 will reboot automatically.

When your phone boots up now, it would be oneunrooted Samsung S4!

Add-on: how to fix bootloop on Galaxy S4:

At times, Galaxy S4 gets stuck on the Samsung logo for more than 5 minutes and is caught into a bootloop. When it happens, follow the instructions below:

Pull out the battery, wait for about 30 seconds and then put the battery back in its place.Boot the device into Stock Recovery mode by holding downVolume Up, CenterandPowerkeys till the Samsung logo blinks twice. Release the Power button then but keep other two keys pressed till you see a blue menu. Use the volumekeys to scroll and power keys to select.From the menu, wipe data: selectwipe data/factory resetoption followed by wipe cache partition.Finally reboot the system by selectingreboot system now.

This should have fixed the bootloop issue.