Firmware rollback on Xiaomi Redmi Note 8: safe downgrade MIUI without bricks

Xiaomi Redmi Note 8 is one of the most popular smartphones in the budget segment, but MIUI updates do not always bring improvements. The new firmware can slow down, drain the battery faster or contain bugs that make you want to go back to the previous version. However, rolling back the firmware on Redmi Note 8 (codenamed ginkgo) is not as easy as installing an update. In this article, we will analyze all the steps from unlocking the bootloader to choosing the right version of MIUI and recovering data.

The main problem with downgrade is the risk of turning your phone into a brick, which is due to incompatible versions of the bootloader, firmware errors or a mismatched recovery file, how to avoid these errors, what tools you will need (Mi Flash Tool, ADB, Fastboot), and where to download official firmware, and whether you can save data when you roll back and what to do if the phone does not turn on after firmware.

Important: the procedure requires unlocking the bootloader, which resets all data on the device. If you are not ready for this, consider alternative ways to solve problems (for example, resetting settings or installing custom firmware).

Why you might need to roll back firmware on the Redmi Note 8

MIUI updates aren’t always optimized for older models, and here are the most common reasons why users want to go back to the previous version:

• 🔋 Increased battery consumption – new firmware may contain background processes that drain the battery faster. MIUI 13 Many Redmi Note 8 owners complained about reducing their operating time to 30%.
• 🐢 Lags and slowdowns - the latest versions MIUI Often, they require more resources than the Snapdragon 665 can provide in the Redmi Note 8.
• 📱 Failing features – sometimes updates break the camera, fingerprint sensor, or module NFC. For example, in MIUI 12.5 Google Pay has stopped working due to certification issues.
• 🔒 Restrictions from Xiaomi – in new versions can block the ability to install custom firmware or disable unlocking the bootloader.

Before you start rolling back, check if resetting to factory settings (Settings → Phone → Reset) will help. Sometimes it solves problems without having to refashion the device. If the reset didn't help, read on.

Preparation for rollback: what to do before the firmware

Firmware rollback is an irreversible process if you don't back up. Here are the steps you need to take before you start:

1. Save all data. Fastboot or Recovery firmware erases internal memory. Copy photos, videos and documents to a PC or cloud (Google Drive, Mi Cloud), Contacts and SMS can be exported through the Contacts app.
2. Find out the current version of MIUI. Go to Settings → About Phone → MIUI version. Write down the full name (e.g. MIUI Global 12.5.3 Stable). This will help you choose the right firmware to roll back.
3. Check the model of the device. In the same menu, find the model of the device - it must be M1908C3JG (global version) or M1908C3JC (Chinese version).
4. Charge the phone. Battery level should be at least 60%. If the phone runs out during firmware, it can lead to a hard brick.

Also, prepare a Windows PC (for the Mi Flash Tool) and USB-cable (preferably original) Disable the antivirus, it can block firmware files.

Unlocking the bootloader: without this, rollback is impossible

Xiaomi blocks the bootloader on all devices, and to flash the older version of MIUI, you have to unlock it, which erases all data and requires you to link your Mi Account.

Steps to unlock:

1. Link your Mi Account to your phone in Settings → Xiaomi Account.
2. Turn on USB Debugging in Settings → About Phone → MIUI version (click 7 times on version, then go back to Additional Settings → For Developers).
3. Download the Mi Unlock Tool (the official tool from Xiaomi).
4. Launch the utility on your PC, log in to the same Mi Account and connect your phone in Fastboot mode (turn off your phone, then press Power + Volume Down).
5. Follow the instructions of the program. Unlocking will take up to 72 hours (Xiaomi checks the request manually).

⚠️ Note: If you have previously unlocked the bootloader but have not flashed custom recovery (for example, TWRP), The account can be linked, in which case the unlock will be faster (1 to 24 hours).

Once successfully unlocked, the phone will automatically reset to factory settings, and you can now start the firmware.

Choosing the Right Firmware for the Redmi Note 8

Mistakes in firmware selection are the main reason for bricks to roll back. For the Redmi Note 8 (ginkgo), you need to consider:

• 🌍 Region: firmware is divided into Global (for international models), China (Chinese only) and EEA (Europe? They must not be mixed!
• 📦 Firmware type: Recovery ROM (It is installed via stock recovery or Fastboot. ROM (It's wired through the Mi Flash Tool.
• 🔢 Android Version: You can't stitch it MIUI Android 10 on top of Android 11 (and vice versa) without completely resetting.

Where to download the official firmware:

• MIUI Downloads (select Redmi Note 8 → Stable or Developer)
• Firmware Updater: Xiaomi Firmware Updater (all versions, including the old ones).

⚠️ Note: If you are running a version older than the one installed on your phone when you bought it, you may need to roll back the bootloader.This is a risky operation, as older versions of the bootloader may not support new firmware. TWRP custom firmware (e.g. Pixel Experience).

Step-by-step: how to flash the old version of MIUI

We will look at two ways: through the Mi Flash Tool (the most reliable) and through Recovery (if unlocking the bootloader is impossible).

Method 1: Fastboot Firmware (Recommended)

What you need:

• Unlocked boot loader (see previous section).
• Mi Flash Tool (download from the official website)
• Fastboot ROM firmware file (unpacked into a folder).
• USB-cable and PC.

Instructions:

1. Turn off the phone and put it in Fastboot mode: pinch Power + Volume Down.
2. Connect your phone to your PC. Android Bootloader Interface should appear in the Device Manager.
3. Launch the Mi Flash Tool, press Select and specify the path to the folder with the unpacked firmware.
4. Choose Clean All (Full Reset) or Clean All and Lock (Reset) + Lock the bootloader. Choose Clean all for rollback.
5. Press Flash and wait for completion (5-10 minutes). the phone will reboot automatically.

Method 2: Firmware through Recovery (without unlocking)

This method only works if:

• You're going back to a newer version than the one on the phone out of the box.
• You have stock recovery (not TWRP).
• The firmware is in.zip (not.tgz) format.

Instructions:

1. Download Recovery ROM and rename the file to update.zip.
2. Move the file to the root of the phone’s internal memory.
3. Turn off the phone and press Power + Volume Up to enter Recovery.
4. Select Install update.zip to System (navigation with volume buttons, confirmation - power button).
5. After installation, select Reboot to System.

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If the phone is stuck on the MI logo after firmware, try resetting through recovery: select Wipe Data → Wipe All Data. If that doesn't help, repeat the firmware through Fastboot with the Clean all and lock option, then unlock the bootloader again.

What to do if the phone does not turn on after rollback

If you've got Redmi Note 8, you don't respond to the buttons, or you've got a logo, don't panic, 90 percent of the time, you can restore the device.

1. Check Fastboot mode: connect your phone to your PC and execute the command: fastboot devices If the device is determined, then run the firmware again with the Clean all option.
2. EDL (Qualcomm 9008): If the phone is defined as Qualcomm HS-USB QDLoader 9008, it is in emergency mode. Recovery will require Mi Flash Pro and firmware in.mbn format (download xiaomiflash.com).
3. Check the battery: if the phone doesn't respond at all, plug it into charging for 30 minutes. Sometimes a discharged battery blocks it from turning on.
4. Contact the service: if nothing helps, it may be damaged EMMC-chip (in this case, soldering work is required).

For recovery through EDL:

1. Download Mi Flash Pro and Ginkgo firmware in EDL format.
2. Install the Qualcomm Driver (can be found on 4PDA).
3. Run Mi Flash Pro, select firmware and press Refresh. The device should be defined as COM-port.
4. Press Flash and wait until it is completed (the process will take 10-15 minutes).

⚠️ Attention: Firmware through EDL drop off IMEI After recovery, they must be restored via the engineering menu (#4636##) or utility. SN Writer, without the right one. IMEI The mobile phone will not work!

Alternative methods: custom firmware and TWRP

If the official rollback didn’t help or you want to install an older version of MIUI than Xiaomi allows, consider custom firmware.

• 🔓 Unlocked loader.
• 📱 Established TWRP Recovery (unofficial recovery with Ginkgo support).
• 📦.zip firmware (e.g. Pixel Experience, LineageOS or ported) MIUI).

How to install TWRP:

1. Download the latest version of TWRP for ginkgo from the official website.
2. Transfer the phone to Fastboot and connect to the PC.
3. The command is fastboot flash recovery. twrp-3.7.0_9-0-ginkgo.img fastboot reboot recovery
4. In TWRP, make a backup of the current firmware (Backup → Select Partitions → Uncheck data and cache).
5. Sweep the custom firmware through Install.

Advantages of custom firmware:

• ✅ There are no restrictions on the Android version (you can even install Android 12 on the Redmi Note 8).
• ✅ No Advertising and Unnecessary Xiaomi Apps.
• ✅ Regular security updates.

Disadvantages:

• ❌ No official support (probable camera or sensor bugs).
• ❌ Some functions are not working MIUI (For example, the Game Turbo or Second Space).
• ❌ Risk of blocking Mi Account when using unofficial firmware.

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Custom firmware is a good option if a formal rollback is not possible, but it requires more technical knowledge and may take away your warranty (if it is still valid).

FAQ: Frequent questions about the rollback of firmware on the Redmi Note 8