[Walmart Onn Tablets General] SteVoUniT:
Hello XDA,

I'm writing this quick guide because I recently had to reformat my 8" 100003561 Onn tablet with stock firmware that I found here in the forums. Very briefly, in order to properly root this tablet, you need to have Fastboot installed on your computer. With Fastboot you can flash files on to the tablet that are needed for root.

Firmware I used for 8" Pro (100003561):

Onn 8" Pro 100003561 - Google Drive

drive.google.com

Credit to @will160628

Firmware for 10.1 Pro (100003562):

Onn 10" 100003562 - Google Drive

drive.google.com

Credit to @will160628

You can use the above files to recover from a brick. These files can fully restore your MediaTek tablet if you use a program like SPFlashTools (which is like Odin for Samsung).

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Basically, you need to have your current firmware's boot.img and vbmeta.img files so you can flash them. Before you can flash them you need to unlock your bootloader. To unlock your bootloader you must:

1. Enable Oem unlock in developer settings.

2. adb reboot into the bootloader by typing in "adb reboot bootloader" or press and hold power button + Vol Up when resetting the tablet to go into the bootloader, and choose fastboot.

3. From your computer, in your terminal type in "fastboot devices" and see if your Onn tablet shows up. If it does, type in "fastboot flashing unlock" to unlock the bootloader. Follow the prompts and your bootloader will be unlocked.

From here you will need to prepare your boot.img file so that it is patched by Magisk. You can do this by installing Magisk on the tablet and connecting your tablet to your PC to transfer over the boot.img to the tablet. Using the magisk app you can select install and then I believe it is manual patch a file (AKA your boot.img). Once you patch the boot.img it will generate a patched one in your downloads folder. It will look all weird but you can rename it to "boot.img" for the next steps. Transfer that patched magisk boot.img back to your PC so you can flash it to the tablet.

4. Follow step 2 to get back into the bootloader on the onn tablet.

5. you will need to flash these commands, make sure your patched boot.img (renamed to "boot.img") and your vbmeta are in the correct directory it needs to be in for this process.

On the terminal (fastboot on PC) type in:

fastboot flash --disable-verity vbmeta vbmeta.img

and

fastboot flash boot boot.img

If all is good you should get a "success" confirmation.

you can reboot the tablet by typing: "fastboot reboot"

Everything you now need to install Magisk is ready. Once you open the Magisk app, you can head straight to install if it isn't installed, and hit patch boot image and it will "install" magisk for you. Once you boot into tablet again, Magisk should be completely installed and you should have root. You can test this out by installing the following apps (and I also recommend these):

- Smartpack Kernel Manager for CPU, ZRAM, and other tweaks.

- Apps2SD by Vicki Bonick for linking apps to adoptable storage, fix lag tweaks, and most importantly you can create SWAP memory for the tablet here. (on the emmc or external sd). SWAP is like having additional RAM in a nutshell by using your storage.

- FX File Explorer

- Viper4Android for sound processing which you can find here: https://xdaforums.com/attachments/viperfx_android-zip.5175355/ You can install this by using the module install from storage on Magisk. Convolver files or IRS for Viper4Android can be found here: https://github.com/eedeidk/PulseAudio-IRSs

- SD Maid PRO for cleaning purposes. It is kind of like CCleaner on Windows.

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If you want to debloat this tablet I recommend using adb on your PC and using this command:

adb shell pm uninstall --user 0 (package name goes here, delete brackets)

I learned the hard way, but if you delete the launcher used for this tablet it will break it. I think its called quickstep3 with a little house icon.

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Extras:

Some apps I recommend for this tablet are:

Youtube: Youtube Vanced (Download Vanced Manager)

Music: Youtube Music Vanced (Download Vanced Manager)

Browser: Web Browser Midori Lite on Google Play Store or Chromium (Open source chrome found here: https://chromium.woolyss.com/)