There are a few recovery tools to use on your Android device that can help restore pictures. Few come any easier than the Dumpster application that is available for people who has access to that root file system. With Dumpster, there is almost nothing you cannot restore, from pictures, video files, music files and other data.

Another application idea to check out after you finish the guide is the Flashify application. The Flashify app can queue up to 10 files to flash for you one after the other so you don’t have to be there. Flashify can flash zip files, boot images, recovery images, custom kernels, new mods and more. Where Flashify really excels is when people don’t like to use ADB and fastboot to use commands from a command line.

Samsung Galaxy A3

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. The CF-Auto-Root method in this guide is based on LRX22G.A300GXXU1BOG1 which is part of a wider release of Android 5.0.2 Lollipop firmware. It doesn’t really matter what regions that build ID rolled out to because Chainfire tells us that it’s not a requirement to be running that same firmware on your device. As long as you are running on the Android 5.0.2 Lollipop update, the firmware build number or ID should not matter.
  2. Download the CF-Auto-Root for the SM-300G running on Android 5.0.2 (Lollipop) from here.

Rooting the Samsung Galaxy A3 SM-A300G running Android 5.0.2

  1. Enable the USB Debugging Mode on the Galaxy S3 smartphone before you get started with the guide.
  2. Extract the rooting exploit to the desktop of the computer and you will see the Odin executable and the rooting files.
  3. Right-click on the Odin executable file and choose to run it as an administrator.
  4. Leave all the default options from the Odin flashing tool’s user-interface the same when it opens on your desktop.
  5. Turn off the Samsung Galaxy A3 smartphone by long-pressing the Power button or by visiting the Device Options menu by pressing the Power button just once.
  6. Boot the S3 smartphone back up again by holding the hardware button combination for download mode and then connect the A3 device to the computer with the USB cable.
  7. Wait for around 10 seconds and the ID: COM port from the Odin application on the computer should light up with a yellow or blue color. No color coming from your ID: COM port means that your A3 device is not connected because the drivers are not up to date. You can solve that problem by installing Koushik Dutta’s universal Windows ADB driver — and yes, that is the same guy who founded ClockworkMod Recovery.
  8. Click the AP button from the Odin application on the computer and browse the desktop location for the rooting file that popped out onto the desktop after you extracted the file in step two.
  9. Once you can see the file extension is loaded from the AP button, click the Start button and Odin will now flash that file on your A3 device.
  10. Look over at the display of your Samsung Galaxy A3 smartphone and it should say that it is installing the SuperSU cleaning up the cache partition and re-flashing the stock recovery.
  11. Give it a few minutes and then look for a green box with a pass message inside.

In conclusion, that’s all you need to Samsung Galaxy A3 SM-A300G smartphone running the Android 5.0.2 Lollipop software update. Any device that did not get into recovery mode after re-flashing the stock recovery at the end of the guide will not be rooted. You can install the root checker application from the Google Play Store and check if your Galaxy A3 handset is rooted or not. Those who did not get rooted might need to reboot to recovery mode manually at the end instead. Chainfire, the developer of the rooting method, makes it clear that all devices must get into recovery mode for the rooting to have worked.

Anyone who has gotten the rivers working and the Galaxy A3 connected to the Odin application on the computer, but still cannot seem to get the guide working will need to try installing a different version of the Odin flashing application and try again. Sometimes it can take multiple versions on your computer before your device takes a liking to one of them.