/ Android

Flashing firmware on a rooted Nexus (without loosing your data)

These instrucations are for updating the Nexus 7 (2012) to Android 4.4 KitKat. It should work similarly for other Nexus devices.

  1. First, make sure you have the Android SDK installed.
  2. Download the appropriate factory image for your Nexus device to your PC.
  3. Uncompress archive: tar xzf nakasi-krt16s-factory-da7dee49.tgz
  4. Start device in bootloader mode: Power on the device with both volume buttons and the power button pressed
  5. Flash it:
cd nakasi-krt16s
fastboot flash bootloader bootloader-grouper-4.23.img
fastboot reboot-bootloader
sleep 10
unzip image-nakasi-krt16s.zip
flash system.img

Now choose Start using the volume and power button. The system should now boot and optimize all apps for the new version.