[Samsung Galaxy Tab A7 Lite] mvikrant97:
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VERY IMPORTANT:

1. Before you follow the tutorial below, please backup your current stock firmware partitions using the MTK client tool.

2. This tutorial was tested on the security patch 2023-03-01 so you would need to flash the same or higher base of Canadian firmware to make it work. I have uploaded the firmware based on the security patch version 2023-04-01.

3. If you get an exclamtion mark when configuring drivers on your Windows 10 or Windows 11 machine then please disable the driver signature verification.

4. If you need Canadian firmware based on a different security patch then please make one using Android Utility V124 software.

** This experiment was performed remotely on the Samsung Tab A7 Lite US Version of the Tablet which was also locked to T-Mobile Carriers but it shall work on all US version of this Tablet whether the Tablet is WiFi or LTE variant.

It all started here

Credits: There were two users who actually allowed me to remotely test my concept on their devices.

[Please provide me your XDA usernames so that I can add you to the credits section of this post. Thank you.]

Download all the required softwares here >> CLICK ME TO DOWNLOAD

All the required files are stored on a Google One powered dedicated Google Drive server.

Password if any, to extract files is in small caps password

Prerequisite

1. Samsung Tablet A7 Lite WiFi or LTE Variant.

2. Windows 10 or 11.

3. MTK USB Drivers.

4. Lib USB 32

5. Python 3.11.6

6. USBDK Drivers

7. MTK Client Speed Mod.

8. SamFW Tool 4.8.1

9. Canadian Firmware as shown in the Screenshot below.

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Step 1: Configuring Python, MTK Client and Drivers on your Windows Machine.

Install Python 3.11.6 according to your Windows version. 32bit or 64 bit.

Make sure to tick the >> Add python.exe to PATH

After Python is installed correctly move on to the next step.

Extract the MTK Client mod uploaded here. Then copy the requirements.txt file from the MTK Client folder and copy it to the following path in your Windows or wherever Python is installed on your computer. It was installed to the following directory in my case.

C:\Users\YOUR_USERNAME\AppData\Local\Programs\Python\Python311

Open Command Prompt in the following path as shown

Then type the following command in the window

Command: pip3 install -r requirements.txt

Then it will start downloading the required dependencies and install them on your computer.

Let the process complete.

STEP 2: Installation and configuration of Mediatek Drivers and USBDK Drivers.

Make sure you have the Driver Signature Verification disabled on your Windows Computer in case the drivers are not getting detected or have an exclamation mark on the Mediatek USB PORT_V1632.

Install Mediatek Drivers.

Then install libusb-win32 filter and open the software.

Then turn off your Samsung device and then press and hold just the volume up key to connect it in BROM mode.

As soon as you connect the device with the volume buttons pressed it shall show up as Mediatek USB PORT_V1632 in device Device Manager and in libusb-win32 filter installer.

As soon as the Mediatek USB PORT_V1632 appears select it and click on Install button or it will disappear. You have to be very fast in doing this.

Once you install the drivers successfully then you will get the following message.

Lastly install the USBDK Drivers and then restart your computer. You need the USBDK drivers for the device to be detected in MTK Client.

STEP 3: Flashing the Canadian .bin files from the sm_t227u_mtk_client_fw on the Tablet using MTK client .

Run the MTKClient_GUI 2.0.exe from the MTK Client folder

Connect the tablet in BROM mode by pressing and holding the volume up key.

Once your device is connected successfully you will see the device detected on the top right hand side in the tool.

Select the partitions from the sm_t227u_mtk_client_fw folder and click on write partitions.

Let the Canadian firmware be flashed on the device.

Once the flashing is complete disconnect the tablet and try to power it on by holding all hardware keys on it, it will directly boot into Download Mode.

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Step 4: Now Flash the Odin based same Canadian Firmware on the tablet with the Samfw tool.

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After the odin based flash is complete the tablet may boot or else show up recovery, do a Factory Reset.

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Once the Factory Reset is done successfully setup the tablet and then turn it off again.

You may ask why did not we enabled the OEM Unlock toggle in Developer Settings?

We did not enabled it because the option still does not show up in Canadian firmware as well but still the bootloader can be unlocked using this exploit.

STEP 3: Unlocking the bootloader on the Tablet using MTK client.

1. Open the MTK client Tool

2. Connect the tablet in BROM mode by pressing and holding the volume up key and then head on to Flash Tools tab and do the bootloader unlock operation.

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3. Now disconnect the tablet and then turn it on, it will show you the bootloader unlock warning confirming the bootloader unlock was successful.

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Please share any suggesstions or your inputs. Thankyou.