Have you been struggling to root your Lenovo S850 but no luck, yet? Don’t worry, we have got a simple guide for you below that lets you easily root your device and then guides you how you can get a custom recovery up and running on your device.

Root means a lot to those who just can’t live with a stock firmware. It’s for the users who always want to try out different custom developments on their Android devices. So, here’s how you can go about rooting your Lenovo S850 device:

Lenovo S850

What Is Rooting the Android Operating System?

When you buy a new smartphone, you might not know it, but the Android operating system is in a “locked” state. For the most part, it will not make much difference to you: most apps are still available to use, and there are benefits to this locked state such as better security. When you root the Android operating system, you are gaining full administrative rights over the OS.

Why Would You Want to Root Android?

Gaining full administrative rights over the operating system has some perks to some people. For example, out of the millions of applications available on Google Play, some of them will not be able to run on your device unless it has root access. Until you have a specific need for wanting Android rooted, you probably want to leave Android as it comes out of the box. But if you need to unlock an app, then that is when you want to look into rooting methods. Using more apps is only one example of why you may want root access, here is the full list of benefits:

  • Unlock more applications. Some of the apps available for Android cannot run unless you have root access. This is because the app’s features cannot run without the root permissions because the features require the full system access before they can be useful.
  • Better battery life. Smartphones are great, but they have one caveat, which is each time you recharge the battery, it loses some of its overall lifespan. That means smartphones, in general, do not make great investments, and if your weekly paycheck is low, you will want to limit the number of smartphones you go through. One of the ways you can do that is by removing bloatware and creating a better battery life.
  • Bolster performance. If you are the budget-conscious shopper, you may want to increase the device’s performance. This can be done by removing the bloatware as well. The more processes you have running, the more memory that is used. By removing some of the apps, it can help lighten the load on your hardware.
  • Customize Android with themes. With root access, you can download and install any theme that’s at your disposal. That includes any customized theme you can find.

What Are the Risks of Rooting?

If you are buying a smartphone that is not running iOS, then it is probably the Android operating system that you want running as the ideal software to pair with your shiny new hardware. It is, in fact, the Android OS that offers you the chance to customize the OS considerably more than iOS: custom themes, run any app you know about, the works. For many users, the “openness” of an operating system is important, because it offers them more freedom which means running into fewer problems with their investments. But there is a reason iOS likes a far more locked approach: the ability to customize is not for everyone, and if you do not know what you are doing it can lead to a lot of problems which can define your time with the OS rather than freedom.

With power (full admin permissions) comes greater responsibility. Here are some of the main risk factors when it comes to rooting:

  • Malware becomes a larger threat. You might read the occasional news article about how new malware is wreaking havoc in parts of the world on Android. But the Android operating system with root access becomes considerably more vulnerable to exploits because applications are no longer prisoned off in their own sandbox environments. This means if you accidentally download malware, it can do more damage because it can spread throughout the operating system and even jump into other applications and potentially view sensitive data.
  • You can accidentally brick the smartphone. There is always a chance that you end up bricking the smartphone before you had the opportunity to use it with root access. That is because if you are going to brick it, it is going to happen during the rooting process.
  • You may void the warranty. Most manufacturers do not allow you to root the Android operating system and still get to bring it in for repairs under warranty. Whether they are legally meant to do that or not is another question, but it is now common knowledge that most do not want to help you if they find out you have unlocked the OS with root access.

Files You Need

1. You need to be running a Windows based PC to do this tutorial.

2. You should have the ADB drivers installed on your computer. If you don’t, they are included in the packages below for you to install them on your computer.

3. Download Flash Tool to your computer. It is the tool that lets you flash files on your Android device.

4. Download ADB to your computer. It will be used to gain root-access on your device.

Rooting the Lenovo S850

1. Extract files from both Flash Tool and ADB to the root folder on your C drive by right-clicking on them one by one and selecting Extract here.

2. Double-click on Flash Tool executable to open it.

3. Click on Options and make sure that DA Download All option is tick-marked.

4. Click on Options again and select Speed followed by Force to High Speed.

5. Hit the Scatter-loading button and select the scatter file available in the Flash Tool folder.

6. Click on Download button in the tool.

7. Turn off your device.

8. While your device is turned off, plug it in to your computer using a USB cable.

9. The tool should flash the BOOTIMG on your device.

10. When it is done flashing, reboot your device.

11. Eject your device from your computer.

12. Head to Menu->Settings->Developer options on your device and turn on USB debugging.

13. Plug your device back in to your computer.

14. Double-click on the CMD file that you extracted from the ADB archive. It should be on the root of the C drive.

15. Now, issue the following commands hitting Enter after each line:

adb shell
mount -o remount,rw /system
mkdir /system/bin/.ext

adb push su /system/xbin/daemonsu
adb push su /system/xbin/su
adb push su /system/bin/.ext/.su
adb push Superuser.apk /system/app/Superuser.apk
adb push install-recovery.sh /system/etc/install-recovery.sh
adb push 99SuperSUDaemon /system/etc/init.d/99SuperSUDaemon

adb shell
chmod 0777 /system/bin/.ext
chmod 06755 /system/bin/.ext/.su
chmod 06755 /system/xbin/su
chmod 0755 /system/xbin/daemonsu
chmod 0755 /system/etc/install-recovery.sh
chmod 0755 /system/etc/init.d/99SuperSUDaemon
chmod 0644 /system/app/Superuser.apk

16. On the last command, your device should reboot.

17. And you should now be rooted!

Congrats! Your Lenovo S850 is now rooted and you can confirm it using the Root Checker app on your device.

You are all set to install a custom recovery on your Lenovo S850 to enjoy many of the best custom ROMs based on different Android versions available out there. Enjoy!