Asus Zenfone 3S Max ZC521TL Recovery Mode and Fastboot Mode

Want to know How to Boot Asus Zenfone 3S Max ZC521TL into Recovery Mode and Bootloader Mode or Fastboot Mode? Check out the instructions listed on this page to successfully boot Asus Zenfone 3S Max ZC521TL into Recovery Mode and Bootloader Mode or Fastboot Mode.

Asus Zenfone 3S Max ZC521TL Recovery Mode allows a user to troubleshoot and fix problems with their device. In addition, recovery mode can access some core functions of the device, such as factory resetting the device, wiping cache, Installing updates, backup and restoring data, flash root packages and other zip mods, etc.

Asus Zenfone 3S Max ZC521TL Fastboot Mode or Bootloader Mode is used to re-flash system partitions on the device. It is an alternative to the recovery mode but is more advanced. It helps to modify or write data directly to your device's flash memory.

Asus Zenfone 3S Max ZC521TL Bootloader Mode or Fastboot Mode can be used to unlock the bootloader, flash a custom recovery (CWM, TWRP, Philz, etc.), flash stock ROM, flash custom image files, and more.

Also: Asus ROG Phone 5 Pro Recovery Mode and Fastboot Mode

Boot Asus Zenfone 3S Max ZC521TL into Recovery Mode

Below are the methods using which you can boot Asus Zenfone 3S Max ZC521TL into Recovery Mode.

Boot Asus Zenfone 3S Max ZC521TL Recovery Mode using Hardware Buttons

1. Power off your phone.
2. Once the device is off, press and hold the Volume Up + Power button together for a few seconds.
3. Release all the buttons once you see the Android Boot Mode.
4. Use the Volume Up button to select Recovery Mode from the list of Boot Options and press Volume Down to confirm.
5. If the Android Bot with Red exclamation pops up, then press Volume Down + Volume Up + Power buttons together at once.
6. Now, your phone should boot into Recovery Mode.

Boot Asus Zenfone 3S Max ZC521TL into Recovery using ADB command

1. First of all, install the Asus Zenfone 3S Max ZC521TL USB Driver and ADB and Fastboot Drivers on your Windows computer.
2. Now, enable "USB Debugging" on your phone from Developer Options. If Developer Options is missing, go to Settings → About Phone and tap on Build Number about 7-10 times.
3. Connect your device to computer and open Command Prompt (CMD).
4. Now, enter the below command in CMD to boot Asus Zenfone 3S Max ZC521TL into Recovery Mode.

   adb reboot recovery

Boot Asus Zenfone 3S Max ZC521TL into Fastboot Mode / Bootloader Mode

Below are the methods using which you can boot Asus Zenfone 3S Max ZC521TL into Bootloader Mode or Fastboot Mode.

Boot Asus Zenfone 3S Max ZC521TL Bootloader Mode/Fastboot Mode using Hardware Buttons

1. Power off your Phone.
2. Press and hold the Volume Up + Power button together for a few seconds.
3. Release all the buttons once you see the Android Boot Mode.
4. Use the Volume Up button to select Fastboot Mode from the list of Boot Options and press Volume Down to confirm.
5. Now, your phone should boot into Fastboot Mode.

Boot Asus Zenfone 3S Max ZC521TL Bootloader Mode/Fastboot Mode using ADB command

1. Assuming ADB and Fastboot Drivers and USB Drivers installed on your computer.
2. Enable "USB Debugging" on your phone from Developer Options. If Developer Options is missing, go to Settings → About Phone and tap on Build Number about 7-10 times.
3. Connect your device to the computer using a USB cable and open Command Prompt (CMD).
4. Enter the below command in the Command Prompt window.

   adb reboot bootloader