All of you who like experimenting with your devices should realize that having a backup can save a person from a lot of trouble before they start their tinkering. For those of you who aren’t familiar with the term, a ‘NANDROID’ backup can be explained a backup for the operating system from the NAND memory present in the device, saved to the storage card. A lot of people rightfully advice that users should take a NAND backup of their device before they start flashing a new ROM so that users can go back to the previous setting if something goes wrong. Below you’ll find and easy, step-by-step guide which will teach you how to take a NAND backup and restore your device after doing so.
The first thing you need to do before starting with this guide is to make sure that your device is rooted and has the Clockwork Recovery installed in it. As this process directs the backup on the SD card of the device so, you should make sure that the appropriate space is available. You’ll also have to manually backup the contents if you’ll want them later.
Using the ROM Manage for managing, taking and restoring a NANDROID backup is one of the easiest ways. The ROM Manager is a free app and is available on Google Play. This app provides users with a GUI for installing ROMs along with restoring, performing and managing backups. Keep in mind that the app doesn’t do all of this automatically. After the users make scheduled the desired actions, the app reboots the device into recovery and then performs the functions.
However, there can be situations in which people have to perform, restore and manage backups while not booted or can’t boot into it due to some kind of errors. The guide below can help people with such things!
Step 1: Boot the phone into recovery. If you are not sure how to, simply launch the ‘ROM Manager’ if you have it installed and tap ‘Reboot into Recovery’
Step 2: Scroll down to ‘backup and restore’ or ‘nandroid’ and select/enter by pressing the trackball/optical trackball/power button, depending on the device being used.
Step 3: Simply select ‘backup’ and let the process complete.
Step 4: Then just reboot your phone thus, having a backup of all the contents on your SD card.
Recovering a NANDROID backup:
Step 1: Follow the steps 1 and 2 mentioned above.
Step 2: Then select ‘restore’ which will enable you to see a list of taken backups.
Step 3: Choose the backup you want restored.
Step 4: Let the process finish and reboot the device thus, restoring the contents on your device the way they were when you took the backup.
So, there you go, an easy way to take and restore a NANDROID backup.
(Credit goes to addictivetips)