[Android General] SunSlide:
All normal warnings apply. If you dont know what this is, then don't do it. I'm not responsible for anything you do to your device. I did this on a Boost Mobile Celero 5G that no longer has service so I can't say that all that works. I do have what appears to be a rooted device with magisk.

First, you need some stuff. Follow their directions to install except Magisk. We'll install that later.

15-second adb

[OFFICIAL][TOOL][WINDOWS] ADB, Fastboot and Drivers - 15 seconds ADB Installer v1.4.3

15 seconds ADB Installer v1.4.3 ADB, Fastboot and Drivers What is this? This is All-in-One installer for 3 most needed PC tools for Android. No need to download big SDK for 3 small things. I originaly made it for my Kurdish friend AnGrY DuDe in...

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MTKClient

GitHub - bkerler/mtkclient: MTK reverse engineering and flash tool

MTK reverse engineering and flash tool. Contribute to bkerler/mtkclient development by creating an account on GitHub.

github.com

Magisk.

Release Magisk v26.1 · topjohnwu/Magisk

Changes from v26.0 [App] Fix crashing when revoking root permissions [MagiskInit] Always prefer ext4 partitions over f2fs when selecting the pre-init partition [General] Restore module files' cont...

github.com

UsbDK

Releases · daynix/UsbDk

Usb Drivers Development Kit for Windows. Contribute to daynix/UsbDk development by creating an account on GitHub.

github.com

Steps to unlock Celero 5G:

Turn Developer mode on: Go to Settings-->About phone--> Tap on "Build number" till it says you're a developer.

Back out and go to Settings-->System-->Advanced-->Developer options

Turn on "OEM unlocking" and "usb debugging"

Plug your device in and run:

adb devices

make sure your device is listed and doesn't say restricted, if it does then interact with the device

run "adb reboot fastboot" to reboot into fastboot mode

Let it reboot and you should be in fastboot mode, where this command should show a device

fastboot devices

If all is well then

fastboot flashing unlock

You should have dialog on your phone that wants your attention. I believe it was a warning that it is about to wipe your device. It will factory wipe everything and reboot.

This should unlock your bootloader! Just as easy as it should be! Your phone will start saying that your phone is in an orange state and can not be trusted

Since unlocking the boot loader wipes the phone, we now have to go back through all the initial setup again and turn developer mode back on.

Installing Magisk and Rooting Celero 5G

This is also a fairly easy task. Make sure you have downloaded and installed the Magisk.apk on your Celero. This can be done by using a sdcard, downloading directly to the phone, or using the adb install command. I could add a copy of my patched.img so we could eliminate the making it part but im not sure it'll work.

I used mtk_gui.bat but you could probly find the cli commands for the next part.

-Open up the gui, you will be shown commands to link your phone. This whole process is done in "BROM" mode and we have to get the phone to it. It should be noted that your phone appears to be unresponsive with a black screen in this mode.

-Make sure the phone is unhooked from the computer

-Shutdown the phone using the shutdown menu and wait a few seconds.

-hold down both of the volume buttons and plug your usb cable in.

-keep your buttons held down till the mtk program changes screens. I run MTKClient in a console so it lets me see whats going on a little bit. I will say that this worked great at first but then for some reason it stopped. It was like the connection would get stuck in limbo and luckily unplugging and replugging the usb cable quickly got it to connect. Keep the keys held. Everytime it worked, wierd.

-This is your chance to make unaltered backups of everything and the gpt tables, but we're only after boot_a.

-check mark boot_a(40.0MB) and click read partitions.

-you'll be asked were to save the files. Keep in mind that everything is 64GB but this includes a 51GB userdata partition that is probably not needed. I backed it up anyway just for fun.

-The resulting files will be a bunch of ".bin" files or the one boot_a.bin that we want. Rename this to boot_a.img

-Reboot your phone by holding down the power button for a while.

-When your phone comes back up, transfer the boot.img file over. I just put the phone in transfer mode todo this and copied the img to my Downloads folder using file explorer

-Run the Magisk app and tap install just to the right of the word Magisk.

-Select Select and Patch a File --> navigate to the boot.img and select it. Magisk should now fix your boot img and output a patched_boot.img. Take note as to where and transfer the new patch_boot.img to your computer.

-Rename the file to patch_boot.bin <--- might not have too but I did

-Go back to MTKClient. Select the Write partition(s) tab

-Here you find boot_a and click set. Find your patched img file and select it.

-Do the same for boot_b. I tried just boot_a and it didn't work. I could have have been looking at the wrong thing when checking if it installed though so this may not be nessiccary. I flashed both.

-Click the write partition(s) button.

-Ensure this completes and reboot your phone. It should now have Magisk fully with root permissions.