Re-Installation Android OS on Phone [Complete Guide 2020]

Re-Install-android

Android OS system is an operating system for Android mobile devices. Android OS is developed and introduced by tech giant Google. Android versions such as Lollipop, KitKat, Orio and Jelly Bean are popular among smartphone users around the world. Android is a special platform, especially for mobile users, but sometimes it lacks what is required in the default or upgraded version. So, by reinstalling the Android OS, you can get whatever you want with the help of your device. Today I will show you all the ways to reinstall Android OS on the phone and that too without any professional help.

Why you need to reinstall Android OS?

Android OS Mobile, like other operating systems, is also not fully developed and requires regular security enhancements, including updates, adding a variety of functions and programs, so that the users can work from the phone. Enjoy and use a variety of facilities at work. Today’s latest version of Android is Android 9 Pie, which features an excellent security system that can be used to combat malicious software. Developers were able to demonstrate this result using the System Update Method. It easily checks for memory cells that could potentially be captured by malicious software. 

A similar upgrade system was already implemented in the Ice Cream Sandwich version, but it is used random search for cells, so it did not show ASLR-like results in Jelly Bean. Also, the DEP protection system remained active. But at the moment we are interested in how to update older and obsolete versions of Android to the current release: ICS or Jelly Bean. The methods of these techniques will be discussed later. 

Install Android OS on mobile phones

First of all, you need to make a choice: either to buy a phone ahead of time that will gain popularity among Android OS users or to buy cheap Chinese devices that have the slightest chance of updating to the operating system. If your operating system is very popular then you can be calm and confident that your version will still be updated when you run out of official software support lines, and that’s an important factor. Another “hot” Android device on sale, recommends that all users (beginners and experienced users) buy after one year (at least) to receive both official support, updates and firmware. There will be an opportunity.

Method I: Perform Hard Reset

A hard is reset when we will make factory settings on your mobile. After ending this process you will need to use a computer that will erase all data on your device.

Things you’ll need to do a hard reset on the phone:

  1. PCs with operating systems such as Windows / Linux / Mac
  2. A USB cable which connects your smartphone to your computer
  3. Download file of Android ADB tool

Now, follow these steps below to perform a hard reset on your phone using PC.

Step 1. Enable Developer Mode on Android

  • Open your smartphone settings
  • Open your “About Phone” Section
  • Open your “Device Information” Option
  • You will see the model number, Android version, hardware version, blood number, and other important information about your device. Here, you will need to repeatedly tap on the ‘Blood Number’ option until you see a message showing “Now you’re a developer!”
  • Return to the main settings menu, and then you will see this additional “Developer Options” option.

Step 2. Enable USB Debugging

  • Go to your mobile settings again
  • Open the “Developer Option” 
  • Go to the ‘USB Debugging’ section and enable it.

Step 3. Install the Android SDK Tools

  • Turn on your PC and then download the relevant drivers to your computer.

Step 4. Connect your mobile and PC

  • Now, with the help of a USB cable, connect your Android device to your computer and Make sure your Windows Device Manager recognizes the mobile.

Step 5. Open SDK Tools

  • Open the Command Prompt on your PC.
  • Type the location of the downloaded Android SDK platform-tools 
  • Now you restart your system and then open it within recovery mode and then enter the command. 

Disconnect the Android mobile, and you may now be able to remove the password or reset the factory data to reinstall the OS.

Method II: Flash the ROM

ROM is a modified version of Android OS. You can get the latest Android version by getting the new ROM or you can get the upgraded and clean version of the existing OS on your device. Let’s check out the steps for this.

Step 1. Enable Bootloader

Many people say that when you flash the ROM you are not rooting your phone. Rooting an Android device is a different matter. We only manipulate ROMs to get the latest, clearer and easier Android OS. But, in fact, most custom ROMs come to the phone with root trouble and so when you customize the ROM you will root your mobile device.

Unlocking the bootloader and flashing custom recovery can be a different process from device to device. Therefore, Google is advised to search for “Unlock Bootloader” in “Your Phone Model Number” and then “Flash a Custom Recovery in your Phone Model Number. Next, you will follow the instructions. Most of the time you will see TWRP recovery tutorials.

When you complete this process of unlocking the bootloader and flashing Custom Recovery then root your phone. This will help you make the next step easier.

Step 2. Take Backup of Important Data

After the custom restoration of your Android device, get a backup of your apps, data and other files on the system. Following these steps that will ensure you to return all your data in case of any error while reinstalling the operating system.

  • Restart the Android device and open the ‘recovery mode’ section. Combining the power and the key at most at the same time will work on every Android device.
  • In recovery mode, go to the ‘Backup’ section and select the default settings (especially if you’re doing it for the first time). You can also name the backup file if asked. Press the ‘Confirm’ button and run the backup
  • You will need to wait for the backup

If you can do the backup on your phone, it would be nice as it can back up your entire system including ROM.

Step 3. Download ROM and Flash 

Open your PC browser and search for the best Android ROM for your phone on Google. MIUI, Liquid Smooth ROMs, and CyanogenMod are the most popular ROMs out there. Now, transfer the zip file to your computer via a USB connection on your mobile. You can download it directly to your Android device using a Wi-Fi connection.

Now, Flash the ROM

  • Reboot your Android device and open recovery mode
  • Go to the ‘Install zip from SD card’ or ‘Install’ section
  • Select the download/transfer zip file path
  • Now, wait for the flash process to complete
  • Delete data from your phone if prompted

When all is said and done, your phone is ready to restart with the new ROM.

Step 4. Install Google Apps

You may know that Google applications are not open source, so when you flash your Android ROM, you will need to download and install Google Apps. When you follow the ‘Flash ROM’ step in the above step, download and flash apps like Google Play Store, Gmail, Hangout, YouTube.

That’s it. You have successfully installed the OS on your Android using a PC.

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