How to reflash Xiaomi 8T: all the ways from official updates to custom firmware

Xiaomi 8T is one of the brand’s most popular smartphones, but even years after its release, it can be upgraded with firmware. Want to install the latest version of MIUI, upgrade to custom firmware like LineageOS or Pixel Experience, or just restore functionality after a failure? In this article, a full guide to reflashing with current versions of software and tools in 2026.

Firmware can both revitalize an old machine and turn it into a brick if you approach the process without preparation. We will analyze all available methods, from a safe upgrade via MIUI Updater to a risky but flexible Fastboot. We will focus on the nuances of unlocking the bootloader, choosing the right version of the firmware and recovering from unsuccessful manipulations.

Important: the procedure for Xiaomi 8T (codename platina) is different from the instructions for other models. If you have an 8T Pro or a China ROM version, some steps will be different, we will tell you about that too.

Preparation for Flashing: What to Do Before Starting

The first and most important step is backup, and flashing, especially through Fastboot or custom Recovery, almost always results in a complete reset.

• 📱 Contacts (export to.vcf or sync with Google Account)
• 📸 Photos and videos (copy to PC or cloud)
• 🔑 Logins and passwords (use Xiaomi Cloud or third-party managers)
• 🎮 Game saving (via Mi Account or manual file transfer) /Android/data/)

Next, check the current version of MIUI and the device model. To do this, go to Settings → About the phone.

• MIUI version (e.g. MIUI Global 14.0.5)
• Assembly number (e.g. PKQ1.190319.001)
• Device code name (should be platina for 8T)

⚠️ Attention: If your Xiaomi 8T purchased in China (version with C suffix in model), firmware Global ROM This can block the network, and in this case, you need to convert through Fastboot using special scripts.

Also prepare:

• 🔌 Cable USB Type-C (original or certified)
• 💻 Windows computer 10/11 or Linux (for Fastboot)
• 🔋 Battery charge of at least 60%
• 🛠️ Tools: Mi Flash Tool, ADB/Fastboot, Platform Tools

Method 1: Update with MIUI Updater (the safest method)

If your goal is to simply upgrade Xiaomi 8T to the latest version of MIUI without risking data loss, this method works best, even on a locked bootloader and does not require a PC connection.

Instructions:

1. Open Settings → About the phone → System update.
2. Click on the three dots in the top right corner and select Select Service Pack.
3. If the update is available, download it directly. If not, download the version you want from Xiaomi's official website (select platina for 8T).
4. After downloading the file (.zip), click Install and wait for the reboot.

Advantages of the method:

• ✅ Does not require unlocking the loader
• ✅ Stores user data (unless otherwise stated)
• ✅ Maintained officially

⚠️ Note: If after the update the phone is stuck on the logo MI, Wait 10-15 minutes. If the problem persists, reboot to Recovery. + Volume Up and select Wipe Cache.

💡

Updating through MIUI Updater is the only method that does not void the warranty and does not require technical skills.

Method 2: Fastboot Flashing (Full Cleaning and Installation)

The Fastboot method is used to completely flash the device when you need:

• 🔄 Restore your phone after a major failure
• 🔓 Install Global ROM Chinese version (and vice versa)
• ⚡ Upgrade to a new version of Android (for example, from 9 to 10)

For this method, you must unlock the bootloader. If you haven't, go back to the section on preparation.

Step-by-step:

1. Download Fastboot firmware for platina with Xiaomi Firmware Updater (choose the Fastboot version, not Recovery).
2. Unpack the archive in a folder. C:\platina_fastboot (pathless!).
3. Install the Mi Flash Tool and ADB/Fastboot drivers.
4. Turn off the phone, then press Power + Volume Down to log into the Fastboot.
5. Connect your phone to your PC and start the Mi Flash Tool. Select the firmware folder and press Refresh, the device needs to be determined.
6. At the bottom, select Clean All (full clean) or Clean All and Lock (clean + lock bootloader).
7. Press Flash and wait until the end (the process will take 5-10 minutes).

Download the correct version of the firmware (platina)|Install Mi Flash Tool and Drivers|Unlock the boot loader (if not done)|Charge your phone at least 60%|Prepare original USB-cable-->

If the phone does not turn on after the firmware:

• Try re-sweetening with Clean All mode.
• Make sure that the firmware is suitable for platina (not for platina). platina_c — Chinese).
• If the screen is black, but the PC detects the device in Fastboot, repeat the process.

Method 3: Install custom firmware (TWRP + LineageOS/Pixel Experience)

If you are not satisfied with MIUI, you can install alternative firmware, for example:

• 📱 LineageOS (Pure Android)
• 📱 Pixel Experience (like the Google Pixel interface)
• 📱 Havoc-OS or CrDroid (castomy)

This will require:

1. Unlocked bootloader.
2. Installed Custom Recovery (TWRP)
3. It's a good firmware for platina.

Instructions for installing TWRP:

1. Download the latest version of TWRP for Xiaomi 8T from the official website.
2. Rename the file to twrp.img and place it in a folder with platform-tools.
3. Enable USB Debugging in Settings → For Developers.
4. Connect your phone to your PC and execute the command: adb reboot bootloader
5. TWRP command: fastboot flash recovery twrp.img
6. Recovery: Fastboot Reboot Recovery

Now you can install custom firmware:

1. Download firmware (such as LineageOS) and GApps (if you need Google services).
2. Transfer the files to your phone or flash drive.
3. In TWRP, run Wipe → Advanced Wipe and mark Dalvik, Cache, System, Data.
4. Install firmware, then GApps (if necessary).
5. Reboot.

⚠️ Note: Castom firmware may not support Widevine L1, Netflix and other services will be in low resolution (480p). Check compatibility before installation.

Unlocking the loader: without this can not do

Fastboot methods and custom firmware require an unlocked bootloader. Xiaomi officially allows this, but the process has limitations:

• 🔗 Link to Mi Account (requires a confirmed phone number).
• ⏳ Waiting 7–30 days after first linking your account to your device.
• 🔄 Unlocking resets all data.

Step-by-step:

1. Link Mi Account to your phone in Settings → Xiaomi Account.
2. Enable OEM Unlock in Settings → For Developers.
3. Download Mi Unlock Tool from the official website.
4. Launch the tool, log in to your account and connect your phone in Fastboot mode.
5. Press Unlock and wait until it is completed (it may take several attempts).

If the instrument makes an error:

• Couldn’t unlock – 7 days after the account was linked.
• Current account is different from the account info on the device - account on the phone and in the tool are different.
• Device is locked. Wait for X days - you need to wait for the specified number of days.

1. Use another. USB-cable.

2. disable the antivirus on the PC.

3. Launch the tool on behalf of the administrator.

4. Install drivers manually through Device Manager (select Android Bootloader Interface).-->

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

If the Xiaomi 8T doesn't respond to the power button or is stuck on the logo, don't panic. 90% of the time, the device can be restored.

First, determine the state:

• 🔴 Black screen, no reaction to charging - maybe the battery or iron problem has gone down.
• 🟡 Logo. MI, Infinite download – firmware or cache error.
• 🟢 Vibrates, but the screen is black – a problem with the display drivers.

Decisions:

1. Hard reset: Hold the Power + Volume Up for 10-15 seconds. If the phone vibrates, let it go and try to turn it on.
2. Cache Clearing: Log in to Recovery (Power + Volume Up) and select Wipe Cache.
3. Fastboot Flash: If the phone is detected in Fastboot, repeat the firmware with Clean All mode.
4. Battery check: Connect to charging for 30 minutes - it's possible the battery is completely discharged.

If nothing helps:

• Try flashing the anti-rollback version of the firmware (if the error is due to a rollback).
• Use it. EDL-Mode (requires an authorized Xiaomi account and boxing).
• Contact the service center (if the problem is hardware).

💡

If the phone doesn't turn on, but the PC detects it in Fastboot or EDL, the chances of recovery are close to 100%.

FAQ: Answers to Frequent Questions