How to Fix Bootloop on Zenfone 4 A400CG

Today I will share some methods How to Fix Bootloop on Zenfone 4. Bootloop means your phone doesn't boot up right, it's just starting and starting and nothing happens, or it's starting and shutting down and starting again. It just means your phone makes a loop while booting

Method 1

First Method you can enter Safe Mode if it's possible. But you must know the cause of bootloop, for example My Zenfone Bootloop because accidentally install bad apps/apk. This Method will not erase your data.

1. Turn Off Zenfone
2. Turn On Zenfone and When it Show Asus Logo Quickly Press Volume Down Until Enter Safe Mode
3. Fix the Problem by deleting the cause of Bootloop
4. Restart your Zenfone, and see your bootloop is fixed or not.

Detailed Instructions about Safe Mode can you see Here : http://www.asus-zenfone.com/2014/09/zenfone-how-to-enter-safe-mode.html

Method 2

Second Method Can be applied if your Zenfone 4 can enter droidboot. This Method will erase your data (data loss).

1. Turn Off Zenfone 4 and Remove the battery
2. Plug in the battery again.
3. Enter Droidboot mode by Pressing Volume up + Power

   

   Zenfone 4 Droidboot Mode - www.asus-zenfone.com

4. Choose "Factory Reset"
5. Reboot and See if your Bootloop has been resolved or not.

Method 3

The Third Method requires RAW firmware for Zenfone 4, and a Micro SD Installed on your Zenfone 4. This Method completely erase all of your data and root.

1. Download Raw Firmware for Zenfone 4 ( JellyBean , KitKat) 
2. Place RAW file inside SD Card
3. Turn Off Zenfone 4 and Enter Droidboot by pressing Volume up + Power Button
4. Choose "SD Download"
   
5. Wait Until Finish and Reboot

How to fix Bootloop on Zenfone 5 and Zenfone 6

Today I will share some methods How to Fix Bootloop on Zenfone 5 or Zenfone 6. Bootloop means your phone doesn't boot up right, it's just starting and starting and nothing happens, or it's starting and shutting down and starting again. It just means your phone makes a loop while booting

Method 1

First Method you can enter Safe Mode if it's possible. But you must know the cause of bootloop, for example My Zenfone Bootloop because accidentally install bad apps/apk. This Method will not erase your data.

1. Turn Off Zenfone
2. Turn On Zenfone and When it Show Asus Logo Quickly Press Volume Down Until Enter Safe Mode
3. Fix the Problem by deleting the cause of Bootloop
4. Restart your Zenfone, and see your bootloop is fixed or not.

Detailed Instructions about Safe Mode can you see Here : http://www.asus-zenfone.com/2014/09/zenfone-how-to-enter-safe-mode.html

Method 2

Second Method Can be applied if your Zenfone 5/6 can  enter droidboot. This Method can erase your data (data loss).

1. Turn Off Zenfone and wait for a minute.
2. Enter Droidboot by Pressing Volume up + Power button

   

   Droidboot Mode Zenfone-www.asus-zenfone.com

3. If success enter Droidboot, choose "Last Successful Flash Log" (navigate with volume up/down  and power button to choose)
4. Then choose "Reboot" if you can enter Homescreen, job is done :)
5. If "Last Successful Flash Log" doesn't work well or still bootloop, Enter Droidboot again and Choose Factory Reset (Warning: This will erase all data)
6. Then Choose "reboot" again.

Method 3

The Third Method requires Droidboot mode and Recovery Mode. This Method completely erase your data and root.

1. Turn Off Zenfone and wait for a minute.
2. Enter Droidboot mode by Pressing Volume Up + Power Button

   

   Droidboot Mode Zenfone-www.asus-zenfone.com

3. Choose Recovery Mode
   
4. When "No command" appear, Press Volume down+Volume Up then your zenfone will enter recovery (wait patiently).

   

   Recovery Mode Zenfone - www.asus-zenfone.com

5. When You enter recovery but "Red Dead android Robot" appear, it means your zenfone recovery was disappear/missing. The Solution is Flash Recovery, Detailed Tutorial can you read Here: http://www.asus-zenfone.com/2014/08/zenfone-original-recovery-image-zenfone.html Make sure you flash your current Zenfone version/lower recovery. (If you can enter recovery Skip this step)
6. Choose "Wipe Data/Factory Reset" and Wait until Complete.
7. Choose "Wipe cache Partition" and Wait until Complete.
8. Back to Recovery and Choose "apply update from ADB" Detailed tutorial about flashing via ADB can you read Here: http://www.asus-zenfone.com/2014/05/flash-tutorial-via-adb-sideload.html

How to fix Bootloop on Asus Zenfone 4 4.5 A450CG

asus zenfone bootloop

Today i will post, How to fix Bootloop on Zenfone 4.5 A450CG

Resources:

1.  ADB (Download HERE)
2.  Intel USB Driver (Download HERE)
3.  System.img.gz (Download HERE)

Instructions:

1. Download all Resources above, Install Intel USB Driver and Extract ADB folder then place System.img.gz to ADB Folder.
2. Turn off Zenfone 4 a450cg then go to Droidboot (Power + Volume up)
3. Connect Device with PC/Laptop
4. on ADB Folder Press Shift+Right Click then choose "open command window here"
5. Then type this on CMD (bold only):
   fastboot erase cache then wait until complete
   fastboot erase userdata then wait until complete
   fastboot erase system then wait until complete
   fastboot reboot-bootloader then wait until complete (will restart to droidboot)
   fastboot flash system system.img.gz then wait until complete
   fastboot flash boot boot.img then wait until complete
   fastboot reboot-bootloader then wait until complete
6. Factory Reset via Droidboot