The following guide to root the Samsung Galaxy A3 SM-A300H smartphone running on Android 5.0.2 Lollipop will install and enable the SuperSU on your device. You’ll notice the SuperSU as soon as you open your app drawers after completing the steps. The SuperSU app is by Chainfire and it’s the newest version of the SuperUser app. The original developer of Superuser, Koushik Dutta, now has two major things considered de facto: the SupereUser and the ClockworkMod Recovery which is no longer active.

SuperSU is the new application that most rooting methods will have you installing. You either get it with the CF-Auto-Root tool by running the rooting script, or by installing the SuperSU zip file directly from a custom recovery. Once you have it, it’s a solid root app that will keep your device safe and in lockdown mode, not allowing any malware to get into your system. It’s also going OT let you know when an app wants root access, so when you download a root app such as J. Rummy’s ROM Toolbox, it will let you know the ROM Toolbox wants in and then you allow access.

Samsung Galaxy A3

The rooting exploit in this guide by Chainfire is based on the LRX22G.A300HXXU1BOK5 firmware which is part of an over the air update for some regions that was based on Android 5.0.2 Lollipop

Files You Need

  1. Download the new CF-Auto-Root file for the Galaxy A3 SM-A300H running Android 5.0.2 Lollipop from here.
  2. There are two variants of this Samsung Galaxy A3 smartphone. Make sure you have the one with the “a33gxx” device name. The other version of the SM-A300H is currently running Android 4.4.4 KitKat at the time of writing this guide.

Rooting the Samsung Galaxy A3 SM-A300H running on the Android 5.0.2

  1. Enable the USB Debugging Mode on the Samsung Galaxy A3 handset, so you can use the Odin flashing tool once connected to the computer.
  2. Extract the CF-Auto-Root tool for the A3 smartphone to the desktop of the computer.
  3. Right-click on the Odin application’s executable file and choose to run it as an administrator.
  4. Do not make any changes to the boxes you get as default settings from the Odin application.
  5. Boot the Samsung Galaxy A3 SM-A300H to download mode and connect to the computer with the USB cable.
  6. Wait until you can see the green ID: COM port from the Odin app and the message box says that your Samsung Galaxy A3 device is added. Installing the universal Windows ADB driver if that does not happen for you.
  7. Click the AP button and browse the desktop of the computer for the Galaxy A3’s tar.md5 file that you extracted earlier.
  8. Click the Start button and wait for the flashing to complete.
  9. When you can see the pass message from the Odin application, turn your attention to the Samsung Galaxy A3’s display and look out for when it says it is restoring the stock recovery, cleaning up and then about to reboot in 10 seconds. It needs to now boot into recovery mode — it should and it is automatically programmed to do this for your device.

In conclusion, that’s all you need to root the Samsung Galaxy A3 SM-A300H smartphone running on the Android 5.0.2 Lollipop software update. Any device that does not boot automatically into recovery mode after the flashing completes will not be rooted until you manually boot to recovery mode instead. Once everyone has been in recovery, the SuperSU will be installed and enabled on the device and you will find the SuperSU available from your A3’s app drawer after you reboot back to normal mode.

If you are still struggling to get your Samsung Galaxy A3 device rooted using the guide above, try doing the same thing, but using a different version of the Odin flashing tool. It comes in a few different numbered versions and sometimes a version might not flash well for a particular device. These occasions are random and cannot be understood or predicted.