
oday I decided to wipe the cache partition of my Zenfone 2 because it
was getting too slow. I thought this was going to be straightforward
process but I would soon be proven wrong. Because the wiping was taking
too long, I switched the Zenfone 2 off midway into wiping the cache
partition. On reboot my device got stuck only showing a green
sleeping(Dead) Android logo with an error! message. The error message
would just flashing constantly and nothing would happen when I try to
enter the recovery by the usual method of pressing power + volume up at
the same time and then releasing it. I thought it was just a minor bug
and I could easily solve it by switching off and again booting into
recovery. Again, I just got a dead Android and couldn’t access the
recovery options. However, since I could still boot into fastboot, I
knew all hope wasn’t lost. Finally I was able to fix the problem by
connecting the phone to my PC and running some Fastboot commands. If you
are having this problem of a dead Zenfone 2 after using the wipe cache
partition option in the recovery, here is how you can fix it:
How to fix Zenfone 2 Wipe Cache Partition Recovery Error
Before you begin, I really hope you have sufficient charge on your
Zenfone 2. I had about 30% left before I messed up the recovery. If you
have zero charge and your phone is not able to charge, you may not be
able to use the below steps.
- Install ADB/Fastboot drivers in your PC
- Note: You may have to turn off your antivirus because it may detect the adb files as a malware
.
- Install Intel USB drivers for Android devices from here
- Down these stock recovery and boot images from here (not sure if you really need them)
boot.img | droidboot.img | recovery.img
- Copy all of the img files to the same folder where the adb and fastboot files are located
- Reboot Zenfone 2 in fastboot by pressing power + volume up key
(Release volume up after the ASUS logo appears). Fastboot menu is
basically the first menu from which you can choose Recovery. But don’t
go into recovery yet.
- Now connect you Zenfone 2 to your PC via USB
- If you have installed the USB driver, the Zenfone 2 will be detected as an Android Device
- Open Command Prompt and navigate to the folder where the adb and fastboot files are located
- Run this command- Fastboot devices which checks whether your device is detected or not
- Now run these commands one by one:
- Fastboot erase cache
- fastboot flash fastboot droidboot.img
- fastboot flash recovery recovery.img
- fastboot flash boot boot.img


Note that you will get the "permission denied" error with each of these
commands. Despite the errors my Zenfone 2 was fixed because after
running these commands I could finally access the recovery menu. After
completing the above commands, disconnect your Zenfone 2 and then go to
recovery menu by using the volume key and then pressing power key to
select it. Now you will notice that the sleeping android logo with error
message is no longer blinking or flashing. Press and hold power button,
then (while holding power button) press Volume up key and release it
and then release the power button. It should now take you to the
recovery menu. If that didn’t work try this: press power button +
Volume and release the buttons at the same time.
Now you will finally see the recovery menu. Use the volume keys to
highlight “Wipe Cache Partition” and this press the power button to
select it. Wait till the wipe cache partition is completed. Now reboot
the device and your ASUS Zenfone 2 will come back to life.
I hope my tip will help a lot of people who are experiencing the same
dead Zenfone 2 issue after wiping the cache partition. Many people who
went through this problem think they have bricked their Zenfone 2 for
good but as you can see it’s actually very easily fixed.