How To Backup Efs Partition: A Comprehensive Guide

Introduction

The EFS (Encrypting File System) partition on your Android device is a critical component that stores important data such as IMEI, Wi-Fi MAC address, and other device-specific information. Losing this partition can cause severe damage to your device’s functionality, and it’s essential to back it up regularly. In this article, we’ll guide you through the process of backing up your EFS partition.

What is EFS Partition?

The EFS partition is a small, dedicated partition on your Android device that stores critical data related to your device’s security and functionality. It houses the IMEI, Wi-Fi MAC address, and other device-specific information. Losing this partition can result in your device being unable to connect to cellular networks or Wi-Fi, and it can even cause permanent hardware damage to your device.

Why Backing Up EFS Partition is Important?

It’s crucial to back up your EFS partition to prevent any data loss or damage to your device. If you ever need to flash a new ROM or custom recovery, there’s a risk of losing your EFS partition. Backing up your EFS partition ensures that even if something goes wrong, you can restore your device’s functionality quickly.

How to Backup EFS Partition?

There are several methods to back up your EFS partition. Here’s a step-by-step guide to backing up your EFS partition using two popular methods:

Method 1: Using TWRP Recovery

1. Make sure you have TWRP recovery installed on your device. 2. Boot your device into TWRP recovery mode. 3. Tap on the “Backup” option in the TWRP main menu. 4. Select the “EFS” partition option and swipe the slider to back up your EFS partition. 5. Wait for the backup process to complete.

Method 2: Using ADB Commands

1. Make sure you have Android Debug Bridge (ADB) installed on your computer. 2. Connect your device to your computer via USB cable. 3. Open a command prompt or terminal window on your computer. 4. Type “adb devices” to make sure your device is connected. 5. Type “adb shell” to enter the device’s shell mode. 6. Type “su” to gain root access. 7. Type “dd if=/dev/block/bootdevice/by-name/modemst1 of=/sdcard/modemst1.img” to back up the modemst1 partition. 8. Type “dd if=/dev/block/bootdevice/by-name/modemst2 of=/sdcard/modemst2.img” to back up the modemst2 partition.

How to Restore EFS Partition?

If you ever need to restore your EFS partition, follow these steps:

Method 1: Using TWRP Recovery

1. Boot your device into TWRP recovery mode. 2. Tap on the “Restore” option in the TWRP main menu. 3. Select the EFS backup file you want to restore and swipe the slider to restore it. 4. Wait for the restoration process to complete.

Method 2: Using ADB Commands

1. Follow steps 1-6 from the “How to Backup EFS Partition using ADB Commands” section. 2. Type “dd if=/sdcard/modemst1.img of=/dev/block/bootdevice/by-name/modemst1” to restore the modemst1 partition. 3. Type “dd if=/sdcard/modemst2.img of=/dev/block/bootdevice/by-name/modemst2” to restore the modemst2 partition.

Conclusion

Backing up your EFS partition is crucial to prevent any data loss or damage to your device. In this article, we’ve provided you with two methods to back up and restore your EFS partition. Make sure to back up your EFS partition regularly to ensure that you can restore your device’s functionality in case something goes wrong.