4

This guide describes how to make full backup of whole memory block.

My N5 is encrypted with Android 5.0. As far as I understand new mechanism, it envolves dependency on some external data taken from separate hardware component (part of encryption key). Is it guaranteed that it will not altered after I factory reset and flash Android 4.4 ? And even if it's ok, is it possible finally to restore such backup ? (May be /dev/mmcblck0 is read-only or otherwise restricted due to way hardware-accelerated encryption/decryption works.)

Ryan Conrad
  • 22,683
  • 9
  • 59
  • 81
Artem Pisarenko
  • 51
  • 1
  • 5

3 Answers3

1

The best option I found is making unencrypted backups with WugFresh NRT:

  • Turn on airplane mode (not related to encryption, just recommendation in order to prevent sudden changes in data during backup)
  • Make nandroid full backup (select all partitions available, for 'recovery' partion ROOT required)
  • Make data/media backup
  • Turn off airplane mode

These backups will be unencrypted. Restoring process is symmetric and also doesn't depend on whether device encrypted or not.

If you want to keep backup data encrypted, just use encrypted virtual drive (BitLocker, TrueCrypt, etc.).

Artem Pisarenko
  • 51
  • 1
  • 5
0

Just install CWM Recovery on your device. You will get some options under backup and restore.

cwm recovery

You can effectively backup your current data/ROM and later restore at any stage.

Rahul Bali
  • 324
  • 1
  • 2
  • 15
0

You can install TWRP for your nexus 5 (just Google it...). It will ask you for your password when you enter the recovery. Then you can do a full backup.

Timo Schwarzer
  • 795
  • 3
  • 11