[T-Mobile REVVL V+ 5G] R41N MuTT:
DISCLAIMER:

Please post failures and successes. Keep it relevant, everything else to the DMs please. It makes it easier for others to Q&A. Everyone thanks you for your understanding.

***IF YOU ARE NEW BEWARE!!! BEFORE YOU CHANGE ANYTHING MAKE A BACKUP. LET THIS APPLY TO EVERYTHING. WHENEVER THE OPTION TO BACKUP IS AVAILABLE IT WOULD BE WISE TO DO SO. FAILURE TO BACKUP YOUR DEVICE WILL RESULT IN LOSS OF DATA***

ALL LINKS ALLOWED, APPROVED AND/OR UTILIZED BY XDA. SPECIAL THANKS TO ALL THE DEVS WHO CREATED THE TOOLS WITHOUT WHICH THIS WOULD NOT BE POSSIBLE. I DIDN'T BUILD ANY SOFTWARE MENTIONED IN THIS POST. IF YOU BRICK YOUR PHONE, DO NOT BLAME ME. I'M NOT TELLING YOU HOW TO DO IT, BUT NARRATING A GUIDE TO HOW I DID IT. YOU HAVE BEEN WARNED

REVVL V+ 5G TMOBILE VARIANT ANDROID 11

IT SHOULD BE NOTED THAT SOME PEOPLE ARE REPORTING LOSING WIFI AFTER ROOT, AS HAVE I. I HAVE NOT YET FIGURED OUT HOW TO FIX THIS. I'M THANKFUL FOR ANY ASSISTANCE. FLASHED STOCK BOOT_A DIDN'T FIX IT, ONLY FLASHING BACK TO STOCK ROM. ON ANOTHER IDENTICAL PHONE DIDN'T LOSE WIFI. YOUR GUESS IS AS GOOD AS MINE. LOOKING INTO IT, NO PROMISES

Without further ado, let's start at the unboxing.

1) PREP PHONE:

power on. navigate to settings>about phone and tap "build number" seven times to enable developer options.

navigate to settings>system>developer options and enable "USB Debugging" and "OEM unlock"

FIRST disconnect the device from your comp THEN power the device off.

2) DONWLOAD PYTHON & DRIVERS:

Python

BE SURE TO TICK THE BOX THAT SAYS ADD PYTHON TO PATH and install.

Download and install mediatek drivers from here:

Mediatek USB drivers

Download and install UsbDk from here:

UsbDk

Download MTK client from here:

MTK client

and extract to the desktop. Open the folder and move everything to

C:>Users>[username]>AppData>Local>Programs>Python>Python310

In the 310 directory press Alt + D to highlight your directory path and type CMD and hit enter. This opens a command prompt in the Python310 directory.

In cmd type this command without "":

"python setup.py install"

Go make a sandwich. Preferably turkey with mustard.

When you finish your sandwich, come back and type this command without "":

"python -m pip install -r requirements.txt"

Do not exit the command window.

3) BOOT INTO B ROM MODE:

This is kind of tricky when you don't know it. The screen will will be black. Sometimes, the device will not even vibrate. There's no sunbathing android, no "No Command", no fastboot, no download mode, no recovery- nothing, nada, zip, zilch, goose egg.

Make sure you unplug the device entirely from charger and pc BEFORE you power off. Now that you properly powered off, hold ONLY BOTH volume + - keys while you connect it to your PC. Try to be quick about it. DO NOT TOUCH THE POWER KEY. Continue to hold the volume keys until you know your device connected. When you hear your device connected jingle immediately let go. The screen will remain blacked out and unresponsive. It's normal.

Let's make sure we did it right. Enter the following command without ":

"python mtk e metadata,userdata,md_udc"

Disconnect and power on. If the device has been reset, then you have confirmation.

4) PREP PHONE AGAIN (STEP 1):

5) UNLOCK BOOTLOADER:

Enter the following command without ":

"python mtk da seccfg unlock"

~To relock the bootloader in the future use command "python mtk da seccfg lock". If you flash a custom recovery/ROM and want to return to stock, then you must unroot with magisk first, then flash stock ROM with SP flash tool at the end of this post~

Power on. On the splash screen you will see system type:

"Orange State

Your device is corrupted. Device has been unlocked and cannot be trusted. Press Power key to boot.

Will Reboot in 5 seconds."

This will happen each time you boot the device because your bootloader is now unlocked.

6) PREP PHONE AGAIN (STEP 1):

7) ENABLE ADB FASTBOOT COMMANDS:

Download sdk platform tools here:

sdk platform tools

Extract.

Navigate to the platform tools folder and type Alt+D to highlight directory and type CMD to open a cmd window in platform tools.

Connect device to pc and choose file transfer.

Enter the following command without ":

"adb devices"

A prompt will appear on your phone, click allow.

Enter the following command (again) without ":

"adb devices"

First you'll see a random, arbitrary number. Second time you should see your device serial number and "Authorized", "Allowed", or "Device".

Keep this cmd window open.

8) DOWNLOAD MAGISK AND PATCH BOOT IMG:

Download Magisk from here:

Magisk

Move it to your phone and install. You'll need to allow the installation from unknown sources.

Download firmware from here:

T-Mobile_REVVL_V%252B_5G.zip

Unzip and move boot_a to the downloads folder on your phone.

On your phone, open Magisk and click install and choose boot_a.

Make sure magisk_patched file is in your phone's download folder.

In your platform tools cmd window enter the following command without ":

"adb pull /sdcard/Download/magisk_patched_[numbers].img"

9) ENTER FASTBOOT MODE:

Disconnect device and power off. Hold Vol - and power to enter fastboot mode.

Connect device to PC.

10) ACHIEVE ROOT:

***NOTE: IN THIS STEP YOU MUST LOCATE THE PATCHED FILE ON YOUR PC AND COPY AS PATH. PASTE IT IN THE CMD WINDOW IN PLACE OF "[path to patched file]"***

In the platform tools cmd window enter the following command without ":

"fastboot flash boot [path to patched file]"

Now that you've achieved root, you can play around a little bit. But be careful what you go deleting if you get debloat happy like me and delete your NVRAM & wifi. Just in case you do, here's how to return to stock.

NVRAM backup. This video makes it look easy as pie. (It IS easy)

NVRAM Backup Tutorial

Now we have to bypass DA else SP flash tool will not be able to flash ROM.

Open cmd window and type the following without "":

"python -m pip install pyusb pyserial json5"

Then, update by entering the following command without "":

"python.exe -m pip install --upgrade pip"

Download LIBUSB:

LIBUSB

Run LIBUSB Win 32 filter installer and select Mediatek driver

Enter B ROM mode and connect to PC

Navigate to bypass tool and open "brom.bat"

Close cmd...

Run "flash_tool.exe" in sp flash folder

Options>options>connection tick UART

That's it. Now you can flash with sp flash without encountering error

Here is a helpful link that came from a senior mod:

mtk tool

Download SP Flash tool here:

SP Flash

Extract and launch flash_tool application

Download scatter mt6833 here:

MT6833_scatter.txt

Download bypass tool from here:

bypass tool

download rom2box:

rom2box

Download OTA and use a payload dumper to extract boot and scatter. You can also get DA, but it does nothing. You must bypass DA in order to flash ROM.

OTA

THIS SECTION IS FOR LATER REFERENCING, DISREGARD ANYTHING BELOW THIS

[A13 ota news https://www.t-mobile.com/support/devices/software-updates/t-mobile-revvl-v-plus-android-update]

[Twrp https://www.xda-developers.com/twrp-3-6-0-release-android-11-support/?_ga=2.195721068.1777813512.1675477697-1767133243.1662515191]

~fastboot set_active other

~fastboot flash recovery_a twrp file

~fastboot flash recovery_b twrp file

[Sprout https://dl.twrp.me/sprout/]

https://xdaforums.com/t/guide-porting-twrp-without-source.3843473/

https://www.mediafire.com/download/sxq4cz8bddmr49

https://www.mediafire.com/file/irigs9iviy3sobw/T-Mobile_REVVL_V%2B_5G.zip/file

https://download1526.mediafire.com/ih0pus48i1kg/mwl6h20noutg005/revvplus.zip

[Patched boot_a pending verification https://xdaforums.com/attachments/magisk_patched-25100_hiu69-img.5648347/]

[FLASH STOCK MODEM FILE]

My next guide will be how to use assurance wireless with ANY phone. I'm using assurance wireless on my Oneplus N200 (DE2118).