How to Reinstall Android OS on Phone using PC – Try all Methods

How to Reinstall Android OS on Phone using PC1

Android is an Operating System for mobile devices which was developed and introduced by the tech giant Google. According to a forecast, Android will get 85% of total smartphone shipment market until 2020. We already know that the Android versions like Lollipop, KitKat, Oreo, and Jelly Bean are well-known among the worldwide smartphone users.Android is a great platform, especially for the mobile users, but sometimes it lacks something desired in its default or upgraded version. So, reinstalling the Android OS can help you get what you want according to your device support. Today I will show you all the methods to reinstall Android on the phone and that too without any professional help.

How to Reinstall Android OS on Phone using PC

When your device starts misbehaving, then you need to make some necessary settings, and at last, if nothing works, you need to reinstall the Operating System for making it work properly.

But before you start reinstalling the OS on your device, take back up of your Android mobile on your PC or SD card. You can also use the Google Cloud Storage Service to store the backup files.

Let’s move on to the different ways of getting your Android OS back on your phone.

Method-1: Perform Hard Reset

Hard reset will make the factory settings on your mobile. You will need to use a computer to finish this process which will wipe out all the data on the device.

Things you will need to perform hard reset on phone:

  1. A PC with Operating System like Windows / Linux / Mac
  2. A USB cable to connect your phone to the computer
  3. Downloaded file of Android ADB tool

Now, let’s see the steps below to perform a hard reset on your phone using a PC.

Step-1: Enable developer mode on Android

  • Open your phone settings

About Phone

  • Go to ‘About Phone’ section and tap on it
  • Now, choose the ‘Device Information’ optionPop up tab
  • You will see the Model Number, Android Version, Hardware Version, Build Number, and other important information about your device. Here, you will need to tap repeatedly on ‘Build Number’ option until you see a message ‘you are now a developer!’
  • Come back to the main settings menu, and you will see this extra option of “Developer Options.”

Step-2: Enable USB debugging

  • Now, go to mobile settings again
  • Open ‘Developer options’ menu USb Debugging
  • Go to ‘USB DEBUGGING’ option under the ‘Debugging’ section and enable it

Step-3: Install the Android SDK Tools

Turn on your PC and then download the relevant drivers on your PC.

Step-4: Connect your mobile and PC

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

Step-5: Open SDK Tools

  • On your PC, open the command prompt
  • Type the location of the downloaded Android SDK Platform Tools as below

cd C:\users\Hemangini\AppData\Local\Android\android-sdk\platform-tools

go to cammand prompt

  • Now, restart the system and open it in recovery mode. For this, enter the command below

adb reboot recovery

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

Method-2: Flash the ROM

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

Step-1: Enable Bootloader

Many people say that you are not rooting your phone when you flash the ROM. To root an Android device is a different thing. We only manipulate the ROM to get fresh, clear, and convenient Android OS. But, in reality, mostly the custom ROM comes with the root access to the phone and so you will be doing the rooting of your mobile device when you are customizing the ROM.

unlock bootloaderUnlocking the Bootloader and flashing a custom recovery can have a different process from device to device. So, it advisable to search on Google for “Unlock Bootloader in ‘your phone’s model number’” and then “Flash a Custom Recovery in ‘your phone’s model number.’” After that, follow the instructions. Mostly you will see TWRP recovery tutorials.

When you complete this process of unblocking the Bootloader and flash a custom recovery, root your phone. This thing will help you to do the next step easier.

Step-2: Take backup of important data

After you have a custom recovery of the device, get the backup of your apps, data, and other files on the system. Following this step ensures you to get all your data back if you make any mistake while reinstalling the Operating System.

  • Restart the device and open the ‘Recovery Mode.’ Mostly with the combination of the power key and volume key at the same time will do the task for every Android device
  • In the recovery mode, go to the ‘Backup’ section and select the default settings (especially, if you are doing it for the first time). You can also give the name to the backup file if asked. Hit the ‘confirm’ button and run the backup
  • You will need to wait until the backup is done

If you can/have the Nandroid backup on your phone, then it will be good as it can take the backup of your whole system including the ROM.

Step-3: Download ROM and Flash it

Open your PC browser and look for the best Android ROM for your phone on Google. MIUI, Liquid Smooth ROMS, and CyanogenMod are some of the most popular ROMs out there. Now, Transfer the Zip file to your mobile through USB connection to your PC. You can also directly download it on your Android device using the WiFi connection.

Now, it’s time to flash the ROM:


  1. Reboot your Android device and open the recovery mode
  2. Navigate to the ‘Install ZIP from SD card’ or ‘Install’ section
  3. Select the path of the downloaded/transferred Zip file
  4. Now, wait until the flash process gets finished
  5. If asked, wipe out the data from your phone

When all is done, your phone is ready to restart with the NEW ROM.

Step-4: Install Google Apps

You may know that the Google Applications are not open source and so when you flash the ROM of your Android, you will need to download and reinstall the Google Apps too. As you followed the process of ‘Flash the ROM’ in the above step, download and flash the apps like Google Play Store, Gmail, Hangout, YouTube, etc.

That’s it. You successfully reinstalled the OS on your Android using PC.


Resetting your OS means the data and other settings will be wiped out from your device. So it is advisable first to take backup of your important media files, documents, apps, personal settings on an SD card or your PC using a USB cable.

I hope this guide will help you to reinstall OS on your phone without any hassle quickly. If you know any other reliable method for this process which you have experimented, then you can share it in the comment section below.

PS: Trendy Android is not responsible for any data loss or damage to your phone’s digital or physical settings by following these methods. We always try to provide the best solutions for Android devices, but results may vary from device to device and due to the knowledge of person to person.

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