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Android ROM backup and restore

Creating ROM Backup

Flash the recovery image

$ ./fastboot flash recovery recovery-clockwork- 
  sending 'recovery' (4040 KB)... OKAY [  0.642s]
            writing 'recovery'... OKAY [  0.540s]
finished. total time: 1.187s

The ClockworkMod Recovery should now be installed on the Nexus S.

Boot the phone in recovery mode and select the option “Backup and restore”

$ ./adb reboot recovery

In the phone menu:

  • +backup and restore
  • +backup

Let the system work. It takes a while for a full system backup

Once it is done the backup is stored in your computer just in case, although it should be kept in the sdcard. The backup is stored in /yoursdcard/clockworkmod/backup/YYYY-MM-DD.hh.mm.ss

In order not to reboot the phone, use the entry in the recovery menu to mount the USB storage

  • +mounts and storage

On your computer

$ sudo mount /dev/sdb 
$ ls /clockworkmod/backup/YYYY-MM-DD.hh.mm.ss
boot.img  cache.img  data.img  nandroid.md5  recovery.img  system.img
$ cp -rf /clockworkmod/backup/YYYY-MM-DD.hh.mm.ss 

Restoring ROM Backup

Option A: ROM is in the SD Card

Mount the SD card on your computer and copy the files to a clockworkmod directory

$ sudo mount /dev/sdb 
$ cp -rf   /clockworkmod/backup/

Select the image you want to restore

Option B: ROM is in computer harddisk and not able to move it to the phone

Change directory to the images folder from the zip.

$ fastboot flash bootloader bootloader.img
$ fastboot flash radio radio.img

In HTC – Developer Center it is described how to flash the ROM using fastboot with zip files, update.zip or image.zip. It also includes some other interesting information.

  1. August 18, 2017 at 14:17

    A step by step crystal clear information I have found on the web rather than garbage, I would like to say thank you the author for such an excellent article, can I share this with my community? because some one gets benefits on this

    • jlanza
      August 18, 2017 at 15:13

      I’m glad you like it. Of course you can share 😉 Please just reference 😉

  2. August 30, 2017 at 11:56

    Thanks for sharing this useful information. keep posting a worth able information

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