Many Android advanced users customize their devices by installing custom ROMsor special kernels, flashing unofficial firmware updates and upgrading the system with beta firmwares. Whether you want an Android custom ROM anymore on your device, or you have to take your device to service, always make a backup of the official ROM and in a few minutes, the device may return to the original state and all bugs of the custom ROM or kernel may disappear.
Without original operating system, you will not receive official updates or free support from the service, even if your phone is within the warranty period, if you applied a different ROM than the one that you bought your Android device. A backup of all stock ROM is also known as Nandroid backup, and it includes the whole system data, your personal information, apps and other data saved on your Android device.
This guide will show you how you can make aback up and reinstall your stock ROM (the official operating system) on your Android device. We will do this through the backup that we made before the installation of any another custom ROM.
There are many different ways through you can back up your current ROM and one of the most popular among Android users is ClockworkMod Recovery. This Recovery Mode is a custom tool designed for the Android platform that offers capabilities like: making backups, test custom ROMs, perform maintenance operations and more. You should know that you cannot install ClockWorkMod Recovery on an unrooted Android device, and also not all the device are being able to support this tool.
Read also: How to Boot Android Phone into Recovery Mode
Read also: How To Install ClockworkMod( CWM ) Recovery On Your Samsung Galaxy S5 Plus
How to back up your Android System
- Boot the Android device into ClockWorkMod recovery mode.
- Press “Volume’’ buttonup or down to select “Backup and Restore” option, and confirm by taping on “Power” button.
- Selecting “Backup” by pressing “Power” button will start backing up your Android system automatically.
- Once the backup process over, restart your Android device. The backup file will be saved in a “ClockworkMod” folder, check for it and rename it to use it later on.
So, this is how you can back up your current ROM before flashing a custom ROM by using the ClockWorkMod Recovery tool.
How to restore your Android device
- Boot your Android device into ClockWorkMod recovery mode by using “Volume up” and “Power” buttons.
- Now select “Backup and Restore”.
- To select “Restore” use the Volume up and down button and confirm by pressing the “Power” button.
- If you want to recover all your personal settings in the apps, you need to select “Advanced Restore” and choose “data.img”, but this doesn’t works for all Android devices.
- The restore process will start and at the end you will see the “Restore complete” message.
Now your Android device is safe and you can start playing with it and if anything goes wrong, just follow the guide from above to restore your device using an existing backup.