Reflashing Xiaomi Redmi 9A via SP Flash Tool: the complete guide from A to Z

The Xiaomi Redmi 9A is one of the most popular budget smartphones, but even it can eventually start to slow down, issue errors or require recovery from a failed update. Flashing through the SP Flash Tool is a universal way to restore the device to work, update the software or even install custom firmware. However, the process requires care: wrong actions can turn the phone into a brick.

In this article you will find a step-by-step instruction taking into account all the nuances: from choosing the right version of firmware to solving typical errors like BROM ERROR: S_FT_ENABLE_DRAM_FAIL (4010) or PMT changed for the ROM. We will find out what drivers are needed for Mediatek Helio G25 (chipset 9A), How to avoid loss IMEI And what to do if the phone doesn't turn on after you've been firmware, and if you're a beginner, don't worry, it's tailored for users with no experience.

1. Firmware Preparation: What to Do Before Starting

Flashing through the SP Flash Tool is not a quick fix. 90% of your success depends on proper preparation. The first thing you need to do is save all your important data. The firmware completely erases your internal memory, including photos, contacts and messages. Even if you plan to flash only the system partition (system.img), the risk of data loss remains.

Second, make sure you have:

• 🔌 Cable USB Type-C (original or quality substitute) cheap cables can cause a communication breakdown during firmware.
• 💻 Computer on Windows 7/10/11 (32 or 64 On macOS or Linux. SP Flash Tool is not stable.
• 📱 Charged Redmi 9A (If the battery runs out during the process, the phone may fail.
• 🔧 Mediatek Preloader and Drivers VCOM. Without them, the computer will not see the phone in firmware mode.

Also check the bootloader version of your device. If it is locked (which is typical for official Xiaomi firmware), you may need to unlock through the Mi Unlock Tool. However, for Redmi 9A with a Mediatek processor, unlocking is not always mandatory - the SP Flash Tool can flash the device with a locked bootloader, but with restrictions.

2. Selection of firmware: official vs custom

Not only does the functionality of the phone depend on the type of firmware, but the risks during installation, and there are three options available for the Redmi 9A:

For beginners, the best choice is the official firmware from Xiaomi. Pay attention to the region (Global, EEA, India, China) and the Android version. For example, the firmware for Redmi 9A India may not be suitable for the Global version due to the differences in the modem. Download a file with the extension.tgz or.zip - it will then need to be unpacked.

⚠️ Note: If you are not downloading firmware for your model (for example, for Redmi). 9C instead 9A), The phone will turn into a brick. Check the file name -- it must contain the code dandelion. 9A).

3. Installation of drivers and SP Flash Tool

Without the right drivers, your computer won’t be able to see the Redmi 9A in firmware mode.

• 🔹 Mediatek Preloader Driver – for initialization of the phone.
• 🔹 VCOM Driver - for operation mode BROM.
• 🔹 LibUSB Driver (optional if you are a driver) SP Flash Tool does not see the device).

Download drivers from trusted sources, such as the official SP Flash Tool website. Install them manually through Device Manager:

1. Connect the phone to the computer.
2. Open Device Manager (Win + X → Device Manager).
3. Find a device with a yellow exclamation point (usually under Other Devices or Porteables Devices).
4. Update the driver manually by specifying the folder with the downloaded drivers.

After installing the drivers, download SP Flash Tool (version) 5.2 Unpack the archive to the root of disk C: (e.g, C:\SP_Flash_Tool). Run the program on behalf of the administrator, otherwise it will not be able to communicate with the ports. USB.

💡

If the SP Flash Tool doesn't start, try disabling the antivirus. Many programs (such as Avast or Windows Defender) block firmware tools as potentially dangerous.

4. Step-by-step instructions for firmware through the SP Flash Tool

Now, to the most critical stage, follow the instructions strictly by step.

1. Turn off the phone and remove it. SIM-card/memory card (if any).
2. Launch the SP Flash Tool on behalf of the administrator.
3. Click Choose in the Scatter-loading File section and select the file MT6762_Android_scatter.txt unpacked.
4. In the list of sections, uncheck all items except: preloader (if you flash for the first time), lk (bootloader), boot (kernel) system (system) vendor (vendor files)

Download Only

Firmware Upgrade

No push buttons

Download OK

Download the right firmware for Redmi 9A (dandelion)|Install Mediatek Preloader and VCOM|Unpack. SP Flash Tool at the Root of C Disk:|Disable antivirus and firewall|Charge your phone at least 50 times%-->

Critical: if SP Flash Tool is an error S_FT_DOWNLOAD_FAIL (4008), Do not, under any circumstances, disconnect the phone from the USB. Try reconnecting the cable or changing the port. Interrupting the process at this stage can damage the bootloader.

5. Typical errors and their solutions

Even if you follow the instructions accurately, you can get errors, and here are the most common ways to correct them:

If the phone doesn’t turn on after firmware or hangs on the Redmi logo, try:

• 🔄 Repeat the firmware with the Format All tick + Download.
• 🔋 Charge your phone for 30 minutes, then try turning it on.
• 🛠️ Swipe only the boot section (sometimes helps when hanging on the logo).