[Android General] mvikrant97:
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Requirements:

Download Softwares from the Google Drive -- Password to extract files downloaded is password

Hardware

1. Redmi A2.

2. Windows Based Computer.

3. USB Cable.

Software:

1. Chimera Tool (Used for MTK, libusb32, usbdk, adb and fastboot drivers configuration only)

2. MTK Client Mod

3. SP Flash Tool 5.2136

4. Python 3.11.6

Step 1: Setting up and Python 3.11.6

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

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

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

4. 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: Chimera Tool (Used for MTK, libusb32, usbdk, adb and fastboot drivers configuration only) -- Chimera Download

1. Download Chimera Tool from the official website.

2. Open the Chimera Tool Installer and then select Custom Install

3. Select ADB driver, MediaTek (MTK) driver scroll down and select UsbDk Drivers and click on Next to

install the software.

4. Let the installtion complete.

5. Once the installation is successful. Restart your Computer.

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6. Sign in to Chimera using a free account that you can get here >> Chimera Sign UP

7. Switch off your Redmi A2 and then press and hold both the volume keys together until Chimera detects your device.

8. Once your device is detected successfully disconnect your device and then close the Chimera Tool. The tool has configured everything automatically that is required including drivers installation and libusb configuration.

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Step 3: Backup your Redmi A2 complete stock firmware using MTK Client in case if something goes wrong during downgrade or bootloader unlock.

1. Open MTK Client Tool

2. Connect your Redmi A2 in BROM mode. You will see your device detected in the top right hand corner in the tool as shown below.

3. In Read Partition(s) Tab and tick the Select all paritition except the userdata partition.

4. Click on Read Partitions and the select the folder where you want to save the firmware backup.

5. Disconnect your phone after the readback is complete.

Please note that the Readback will take time to complete because of the slow storage (emmc) used in the phone.

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Step 4: Downgrade to the lowest available firmware for your region using SP Flash Tool and then Unlock Bootloader using MTK client.

1.Download the firmware according to your region from this link >> WATER FIRMWARE DOWNLOAD

2. My device is Indian variant thus I downgraded to MIUI V14.0.3.0.TGOINXM using SP Flash Tool.

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3. Select Auth Bypass in the MTK Auth Bypass Tool and connect your device in BROM mode.

You shall get the follwing message.

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4. Select the Scatter.txt file in SP Flash Tool and flash the device to downgrade the firmware.

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5. Once the Downgrade is complete open the MTK Client Tool and then connect your device in BROM mode and then unlock the bootloader.

6. Go to the Erase partition(s) tab in the MTK Client Tool and Erase Metadata and Userdata partitions.

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7. Goto the Flash Tools tab and hit Unlock Bootloader

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8. Disconnect your phone from the PC and then connect it in fastboot mode.

9. Open a command prompt window and type fastboot oem cdms

(Credits: @WeiKaiTsai )

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10. Your device will then reboot with the Unlock Symbol on the top side signifying that the bootloader has been successfully unlocked.

10a. First Boot will take 3 minutes and 57 seconds to complete.

11. Patch Boot.img using Magisk Delta and then Flash it using Fastboot to root the device.

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