How to Boot Acer ACTAB821 into Recovery Mode and Fastboot Mode

Are you wondering How to Boot Acer ACTAB821 into Recovery Mode and Bootloader Mode or Fastboot Mode? Then, follow the instructions listed on this page to successfully boot Acer ACTAB821 into Recovery Mode and Bootloader Mode or Fastboot Mode.

Acer ACTAB821 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.

Acer ACTAB821 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.

Acer ACTAB821 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: Acer Sospiro A60 Recovery Mode and Fastboot Mode

Boot Acer ACTAB821 into Recovery Mode

Below are the methods using which you can boot Acer ACTAB821 into Recovery Mode.

Boot Acer ACTAB821 Recovery Mode using Hardware Buttons

First of all, power off your phone.
Now, press and hold the Volume Up and Power button together for a few seconds.
Release the keys as soon as you see the Acer logo and wait for few seconds.

Now, your phone should boot into Recovery Mode.

Boot Acer ACTAB821 into Recovery using ADB command

First of all, install the Acer ACTAB821 USB Driver and ADB and Fastboot Drivers on your Windows computer.
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.

Connect your device to computer and open Command Prompt (CMD).
Now, enter the below command in CMD to boot Acer ACTAB821 into Recovery Mode.
```
adb reboot recovery
```

Boot Acer ACTAB821 into Fastboot Mode / Bootloader Mode

Below are the methods using which you can boot Acer ACTAB821 into Bootloader Mode or Fastboot Mode.

Boot Acer ACTAB821 Bootloader Mode/Fastboot Mode using Hardware Buttons

Power off your Phone.
Now, press and hold the Volume Down and Power button together for a few seconds.
Now, your phone should boot into Fastboot Mode.

Boot Acer ACTAB821 Bootloader Mode/Fastboot Mode using ADB command

Assuming ADB and Fastboot Drivers and USB Drivers installed on your computer.
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.
Connect your device to the computer using a USB cable and open Command Prompt (CMD).

Enter the below command in the Command Prompt window.
```
adb reboot bootloader
```