How to Recover a Bricked Asus Zenfone 2 Smartphone

Unbrick Zenfone 2A smartphone is called bricked when it turns into an unusable box because its software or hardware is damaged. Software issues generally are in the form of corrupted firmware or key system files which won’t let the device boot up. While hardware issues would require a physical repair, most software issues (soft brick) can be sorted out by flashing the factory image and hence bringing the device back to life. This however requires a device to be bootable into Fastboot and Recovery modes. Here’s how to recover (unbrick) an Asus Zenfone 2 from such a situation.

Recovering (Unbricking) the Asus Zenfone 2

Whether your Zenfone 2 has bricked due to  a failed OTA update because the device is rooted or there’s some other issue, the solution is pretty straightforward – Flash the Full Stock ROM. Read on to find out how to do that and recover your phone from a soft-bricked or malfunctioning state. Your personal data will generally stay right there, but don’t get too surprised if it is all cleaned up.

  1. Download and Install ADB on your PC.
  2. Download and Install the Intel USB/ADB Drivers.
  3. Download the latest Stock ROM from the Asus website by visiting the following links. If your device got bricked after a recent OTA software update, wait a few days while Asus uploads the latest Stock ROM. On the page below, select Android as the OS and then expand the Firmware section. For non WW devices, please check your regional Asus website for the download details.
    Zenfone ZE551ML Stock ROM
    Zenfone ZE550ML Stock ROM
  4. Copy the downloaded Stock ROM to the folder where you installed ADB (Generally C://adb)
  5. In power off state, press and hold the Volume Up key and then press and hold the Power Key till the phone vibrates. Release the power key at vibration, but keep pressing the Volume Up key. Wait for the phone to boot into fastboot mode.
  6. In the fastboot mode, keep pressing the Volume Down key till you see Recovery Mode. Press Power Key to select it.
    If you encounter a dead android icon at this stage, just press and hold the power key and then press the volume up key. Release both and you’ll be into the recovery mode.
  7. In recovery mode, select Apply update from ADB.
  8. Connect your phone to the PC and open the ADB folder. Right click while holding down the shift key and choose Open command window here.
  9. Pass the following command in ADB. Replace with the name of Stock ROM zip (eg: downloaded in step 2.
    adb sideload
  10. Wait for the process to complete as it will take a couple of minutes.

Reboot the phone when it is all done and hopefully your Zenfone 2 will be boot up fine, alive and working again.

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317 Responses to How to Recover a Bricked Asus Zenfone 2 Smartphone

  1. Swap December 21, 2016 at 12:37 am #

    Sir i cant go through the recovery in my asus ze550ml showing an error which is blinking i tried power button +up volume button when error comes ….i tried all the suff…plzz help

    • Bridger January 20, 2017 at 8:41 pm #

      No worries you can still get into recovery if you are getting an error. When the error pops up after trying to boot into recovery simply press the power and volume up buttons at the same time and release them.(dont hold them together for more than 2 seconds or you will have to restart this process) If you do it right you will get a screen that pops up with the options :reboot system now :apply update from ADB :wipe data/factory reset :wipe cache partition :reboot to bootloader :power down :view recovery logs

  2. ahemed haneen January 21, 2017 at 5:28 am #

    even after flashing stock rom, my phone is directly booting to fastboot mode and staying there

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