[Samsung Galaxy A71 5G Guides, News, & Discussion] allenjthomsen:
I Present The Galaxy A71_5G Guide for Flashing Unlocked Firmware.

Here are some useful reminders:

All download links are at the bottom of this post.

Make sure you follow the "Prerequisites For Anything You decide To Do In This Guide" section.

Don't copy quotation marks, unless I tell you to in this guide.

You will need a Windows computer in order to utilize the software provided.

This is an A71_5G guide, not an A71_5GUW guide.

WARNING: Anything you do in this guide will erase your phone completely. It's recommended that you back up before you do anything and that you remove your google account from your phone (so you don't have to go through FRP).

Disclaimer:

I am NOT responsible for any damage done to your device if you decide to use this guide.

Prerequisites for anything you decide to do in this guide (Required):

Standard Odin

Samsung Drivers

Steps:

1) Uninstall Samsung Switch and/or Samsung Kies, if present on your computer. This helps removes any conflicts with Odin.

2) Extract the Samsung Driver zip and the Odin zip to somewhere safe on your computer.

3) Double click on the extracted "SAMSUNG_USB_Driver_for_Mobile_Phones" executable (SAMSUNG_USB_Driver_for_Mobile_Phones.exe) and complete the installation wizard.

3) Navigate to your extracted Odin folder and double click on the Odin3 v3.14.1_3B_PatcheD.exe.

All About Bootloaders (Required Reading):

As Wikipedia puts it, “A boot loader is a computer program that loads an operating system or some other system software for the computer after completion of the power-on self-tests.” In other words, a bootloader is what loads you operating system. In most Samsung phones (including the S8 and S8+), there’s an e-fuse that prevents downgrading of the bootloader. This means any firmware or firmware update containing a lower Bootloader version than the one you have, will FAIL to be applied. There is really no way to circumvent this.

I’ll be explaining how to properly identify your current Bootloader version.

How to identify Bootloader version:

Steps:

1) Open “Settings” on your phone.

2) Scroll down to “About Phone”.

3a) If you are on a standard, carrier firmware, under “Baseband version” you should see something similar to this: “G950UXXXXXXXX”.

3b) If you are on an unlocked firmware, under “Baseband version” you should see something similar to this: “G950U1XXXXXXXX”.

4) No matter which firmware you're on, the fourth “X” would be either a “1” or a “2”, which means you will have either Bootloader version 1 or Bootloader version 2, respectively.

Note: As stated in the last section attempting to flash firmware that contains Bootloader v1 onto a phone that already has Bootloader v2, will fail. You can update a phone on Bootloader v1 to a firmware that has Bootloader v2, however.

Flashing Unlocked Firmware:

NOTE: The unlocked firmware does NOT unlock your phone for use on other carriers, it only removes bloatware. Some carrier specific features, such as Wi-Fi Calling and VOLTE will not work with the Unlocked Firmware.

Prerequisites: What's listed in the "Prerequisites for anything you decide to do in this guide" section

Odin3 v3.14.1_3B_PatcheD.exe.zip

Unlocked Firmware from site listed below.

Steps:

1) Extract the Odin3 v3.14.1_3B_PatcheD.exe and the Unlocked Firmware you downloaded from below.

2) Turn off your A71_5G.

3) Once off, hold the Power button while holding the Volume Down button, and the Volume Up button until you feel a vibration then let go of the power button.

4) Press the Volume Up key to enter Download Mode.

5) On your PC, navigate to your extracted Odin3 v3.14.1_3B_PatcheD.exe folder.

6) Double click on the "Odin3 v3.14.1_3B_PatcheD.exe" executable.

7) Connect your phone to your PC with your USB cable.

8) You should see Odin3 v3.14.1_3B_PatcheD output "Added!!" in the "Log" tab and underneath the "ID:COM" section, you should see an empty box turn blue.

9) Now it's time to add your firmware files that were extracted earlier. Individually add an appropriate firmware file for each box on the right. The "BL" box will require a firmware file that starts with "BL", the "AP" box will require a firmware file that starts with "AP", the "CP" box will require a firmware file that starts with "CP", and the "CSC" box will require a firmware file that starts with "CSC" (DO NOT USE THE "HOME_CSC" file for the "CSC" box).

10) Go to the "Options" tab and make sure that only the "Auto Reboot" and "F. Reset Time" checkboxes are ticked.

11) Go back to the "Log" tab.

12) Click the "Start" button on bottom right.

13) Sit back and relax for a while. Odin will output what is being flashed in the "Log" and on a box in the top left.

14) The box in the top left will become green and in black letters say "PASS" once the flash was successful.

15) Once the flash finished, disconnect your phone from your computer.

16) Your phone will do an erase at this point, so don't mess with your phone until you reach the setup screen.

17) Continue with the setup on your phone and enjoy!

DOWNLOADS:

Standard Odin/Patched Odin: https://xdaforums.com/android/software/patched-odin-3-13-1-t3762572

Samsung Drivers: http://developer.samsung.com/galaxy/...er-for-windows

Google Platform-Tools (ADB): https://developer.android.com/studio/releases/platform-tools

Unlocked Firmware (Bootloader v1): https://samfw.com/firmware/SM-A716U1/XAA

CREDITS

Credit goes to each respective site/developer for the tools required to complete this.

If you would like to be added to the credits and are one of the developers or owners of the tools used please feel free to Private Messege Me!!!