Firmware rollback on Xiaomi Poco X3 NFC: safe ways and step-by-step instructions

Why Users Want to Reverse Firmware on Poco X3 NFC and When It’s Justified

Xiaomi Poco X3 NFC (codenamed surya) remains popular even years after its release due to its balanced features: Qualcomm Snapdragon 732G processor, 120 Hz screen and capacious battery. However, MIUI updates are not always beneficial. Users face slowdowns, overheating, bugs in the interface or unsuccessful changes in functionality - for example, after switching to MIUI 14, many complain of problems with avfiability and notifications.

Firmware rollback may be required in other cases:

• 🔄 Unstable work after the update (app departures, lags, fast battery discharge).
• 🔒 Loss of features that were in the older version (for example, remote settings for camera or sound).
• 🛠️ Unsuccessful custom ROM — If after installing an alternative firmware, the device works worse.
• 📱 Phone Selling – Returning to Stock Firmware for System Cleanliness.

But before you start, it's important to understand that rollbacks are not always safe, and risks include a device brick (turning into a brick), data loss, or a Mi Account lockdown, so the process requires preparation and strict follow-up.

Preparing for rollback: backup and unlock the bootloader

The first step is to save all the important data. Firmware rollback almost always results in a complete reset, so:

• 📁 Backup photos, contacts and files via Mi Cloud or manually on PC.
• 🔑 Save the list of installed applications (can be done through Settings) → Annexes → Application management).
• 📋 Export. SMS and call logs using third-party utilities (for example, SMS Backup & Restore).
• 🔧 Write down the current screen, sound and network settings – after rollback, they will have to be reconfigured.

The next critical point is to unlock the bootloader, without which a Fastboot or custom Recovery rollback is impossible, and the procedure is officially supported by Xiaomi, but has nuances:

1. Link the device to your Mi Account in Settings → Xiaomi Account.
2. Activate USB debugging in Settings → About Phone → MIUI version (7 times click on version, then go back to Additional Settings → For Developers).
3. Connect the phone to your PC, confirm the debugging permission and follow the command: adb devices Make sure the device is determined.
4. Run unlock through the official Mi Unlock Tool app (download from Xiaomi website).Warning: Once unlocked, the phone will be reset to factory settings!

Backup all the data.|Unlock the bootloader (if not unlocked)|Download the correct version of the firmware|Charge your phone at least to 60%|Install drivers ADB/Fastboot PC-only-->

Ways of rolling back firmware: comparison of methods

There are three main ways to roll back firmware on the Poco X3 NFC. Each has its pros and cons:

The method you choose depends on your goal, for example, if you want to return MIUI 12.5 from MIUI 13, the MIUI Downgrade Tool is suitable, it does not require unlocking and saves some data, and you need to install MIUI 12.0.3 or custom ROM TWRP or Fastboot.

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If you're a beginner, start with the MIUI Downgrade Tool.This method is the most secure, but it doesn't work for all versions. Check compatibility on the XDA Developers or 4PDA forum.

Recoil through MIUI Downgrade Tool: step-by-step instructions

This method is suitable for rolling back 1-2 versions without losing user data (but settings will reset).

• 📱 Phone's not rooted.
• 🔓 bootloader locked (official firmware).
• 🔄 The target version of the firmware is available through OTA.

Instructions:

1. Download MIUI Downgrade Tool with XDA Developers (make sure the version supports Poco X3 NFC).
2. Install. APK-file on the phone and open the application.
3. Select the target version of MIUI from the list (e.g., V12.5.3.0.RJGMIXM).
4. Click Download and wait for the update pack to load.
5. After downloading, press Install – the phone will reboot to Recovery and start installing.
6. At the end of the process, select the Reboot system.

Process time: 10-20 minutes. If the phone hangs on the POCO logo after the reboot, reset via Recovery (Wipe Data).

Recovery with TWRP: for experienced users

If you want a specific old version or custom firmware (like Pixel Experience), you’ll need TWRP. This method is more flexible but risky – an error can lead to a blink.

Steps:

1. Install. TWRP POCO X3 NFC: fastboot flash recovery twrp-3.7.0_12-surya.img Fastboot Reboot Recovery (Download the Update Version) TWRP official website.)
2. Download the required firmware (for example, surya_global_images_V12.0.3.0.QJGMIXM_20210310.0000.00_10.0_global.zip) And put it on SD-card.
3. V TWRP run the Wipe → Advanced Wipe and mark: 🗃️ Dalvik / ART Cache 📄 System 📱 Data (if you want a full reset) 🔄 Cache

Install

Reboot System

Warning: If the phone doesn’t start after installation, try flashing vendor and boot separately through Fastboot.

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Use only the surya firmware (Poco X3 NFC) and installing the firmware from Poco X3 Pro (vayu) or other devices will cause your phone to fail!

Recoiling through Fastboot: Recovery after crashes

Fastboot is the most reliable method for recovering a phone if it doesn’t turn on or is stuck on the logo, you’ll need a PC with ADB/Fastboot drivers installed and an official firmware in.tgz or.zip format.

Instructions:

1. Download the firmware for Poco X3 NFC with Xiaomi Firmware Updater (choose Stable or Weekly depending on the version you want).
2. Unpack the archive in a folder with fastboot (for example, platform-tools).
3. Turn off the phone and press Power + Volume down to log into the Fastboot.
4. Connect your phone to your PC and execute commands: fastboot flash boot.img fastboot flash recovery.img fastboot flash recovery system.img fastboot flash vendor vendor.img fastboot flash dtbo dtbo.img fastboot reboot

If the process is interrupted with a FAILED error (remote: 'Flashing is not allowed'), then the bootloader is blocked - unlock it through the Mi Unlock Tool.

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A script can be used to speed up the process. flash_all.bat (for Windows or flash_all.sh (for Linux/Mac), which comes with a firmware.

Common mistakes and their solution

When you roll back firmware, users often encounter problems, and here are the most common ways to fix them:

If the phone does not determine after the rollback SIM-Wi-Fi cards or not working are likely to be incorrect modems (modem.img). The solution is to flash them separately through Fastboot:

fastboot flash modem NON-HLOS.bin


fastboot reboot

What to do after a successful recoil

After returning to the old version of the firmware:

1. 🔄 Perform reset to factory settings through Settings → Additionally. → Recovery and reset, even if the system is stable, will eliminate potential conflicts.
2. 🔒 Turn off automatic updates in Settings → The phone. → Updating the system → Three points. → Settings.
3. 📱 Reinstall applications from the backup, but avoid restoring system data (such as settings) MIUI) — It could bring back the bugs.
4. 🛡️ If the rollback was due to performance issues, install Greenify or AccuBattery to monitor resources.

Note: If you roll back to a version older than MIUI 12.5, some applications (such as banking) may stop working due to an outdated API.

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After rollback, check the sensors (gyroscope, compass, NFC) through the Phone Tester app. If something doesn't work, re-sweep the persist.img section.

FAQ: Answers to Frequent Questions