How to flash Xiaomi 13 Ultra: all the ways from official updates to custom builds

Xiaomi 13 Ultra

all the relevant ways of firmware

Xiaomi 13 Ultra

ishtar

MIUI Updater

Fastboot

TWRP

anti-rollback

invalid image

Smartphone firmware is always fraught with risks, from data loss to the build-up of the device, but with the right approach and preparation, the process will go smoothly. We won’t convince you to upgrade — decide for yourself whether you need the latest security patches, new camera features, or a clean Android without a shell. MIUI. We will tell you how to minimize the risks and what to do if something goes wrong.

Important: The instructions in the article are relevant to Xiaomi 13 Ultra with factory firmware based on Android 13/14 and MIUI 14/15. If your device has already upgraded to a newer version, some steps (such as unlocking the bootloader) may differ.

1. Firmware Preparation: What to Do Before Starting

The first and most important step is preparation, and neglecting this step often leads to data loss, firmware failure, or even a smartphone failure.

✅ Back up all your data. firmware (especially via Fastboot or TWRP) It erases user files. Use Mi Cloud, Google Drive, or local copying on your PC:

• 📸 Photos and videos (including hidden folders) DCIM and MIUI/Camera)
• 📱 Contact and SMS (Export through Contacts → Management → Exports)
• 🔑 Passwords and tokens (save backup codes for the 2FA-applications)
• 🎮 Save games (use Helium or root backup if there is root)

⚠️ Note: If you are flashing custom firmware (e.g. Pixel Experience or LineageOS), the backup through Mi Cloud may not recover. TWRP Backup or Swift Backup (requires root).

🔋 Charge the battery to at least 60%. Interrupting the firmware due to battery discharge can make it impossible to turn on the device without service equipment. If the battery is worn out (capacity below 80%), connect the smartphone to charge during the procedure.

🖥️ Prepare PCs and tools:

• 💻 Windows 10/11 (for the Mi Flash Tool or Linux/macOS (fastboot)
• 🔌 Cable USB-C → USB-A (Original or certified, without damage)
• 🛠️ Utilities: ADB/Fastboot, Mi Unlock Tool, Mi Flash Tool (links below)
• 📁 Firmware (official or custom) for your model (ishtar)

Make a data backup|Charge the battery. >60%|Download firmware for the Ishtar model|Install ADB/Fastboot PC-only|Disable the antivirus (can block the Mi Flash Tool)|Check the version. MIUI In Settings→The phone.-->

2. How to find out the current version of the firmware and choose the right one

Before the firmware must determine the current version MIUI This is critical: installing firmware with a lower version (downgrade) or from another region can lead to an anti-rollback lock).

📱 How to check the version MIUI:

1. Open the Settings. → The phone.
2. Find the lines: Version MIUI (for example, MIUI Global 14.0.5) Assembly number (e.g, TKQMIXM) Region (Global, China, EEA, India, etc.)

🔍 How to choose firmware for Xiaomi 13 Ultra:

⚠️ Note: Xiaomi 13 Ultra has anti-rollback protection (ARB). This means that once you upgrade to a particular version, you can't go back, for example, if your device is on the Internet. MIUI 14.0.6, and you'll try to stitch it. MIUI 14.0.4, the smartphone is locked. Check the build number before the firmware!

🔗 Where to download firmware:

Official. MIUI Global|Official. MIUI China|Pixel Experience (Pixel Experience, LineageOS)|Another one, I'll write in the comments.-->

3. Unlocking the bootloader: a mandatory step for manual firmware

If you plan to flash Xiaomi 13 Ultra through Fastboot or install custom firmware, you first need to unlock the bootloader. Without this, the device will not allow you to change system partitions. The process takes 72 hours (according to Xiaomi rules) and requires an association of the Mi Account.

🔑 Step-by-step instructions for unlocking:

1. Link your Mi Account to your device: Go to Settings → Xiaomi Account Sign in to your account (if not, sign up) Enable Data Sync and Find your device
2. Activate Developer Mode: Go to Settings → About the phone Tapneta 7 times according to the version MIUI, Until the notification appears, return to the settings → Additionally. → For developers, turn on debugging by USB and Unlock. OEM

Mi Unlock Tool

• Download the utility from the official website
• Launch it. miflash_unlock.exe on behalf of the administrator
• Log in to the same Mi Account as on your phone
• Follow the instructions (the device will reboot in Fastboot)
• Wait 72 hours. Then repeat the process, the bootloader will be unlocked.

⚠️ Attention: Unlocking the bootloader erases all data from the device! also after unlocking some features (e.g. Mi Pay or Widevine) L1 for Netflix HD) They may not work properly.

🔧 Frequent problems when unlocking:

• ❌ Couldn't unlock error - check that your Mi Account is linked to your device and sync is enabled.
• ❌ "Device Not Connected – Try Another USB-cable.
• ❌ Freeze 50% or 99% – wait until it is completed (may take up to 10 minutes).

4. Method 1: Firmware through MIUI Updater (the safest method)

If you need to upgrade Xiaomi 13 Ultra to the latest official version without risk, use the built-in version. MIUI Updater.This method does not require unlocking the bootloader and saves all the data.

📲 Instructions:

1. Connect to stable Wi-Fi (update weighs) ~3-4 GB).
2. Go to Settings → About the phone → System update.
3. Click Check Updates. If a new version is available, download it.
4. After downloading, click Reboot and Update.
5. Wait until it's finished (taken). 10-15 minute).

✅ Advantages of the method:

• 🔒 Safe - No risk of "brick"
• 📱 All data and settings are stored
• 🔄 Automatic compatibility check

❌ Deficiencies:

• ⏳ Long wait. OTA (months)
• 🚫 No version selection (only the last stable version)

💡 If the update does not come:

• Check if you are participating in the beta test. MIUI (turn off the settings → The phone. → Version. MIUI → Three points. → Exit the beta version).
• Reset network settings (Settings) → SIM-maps and mobile networks → Resetting network settings).
• Try downloading the full service package manually from the official website and installing through System Update → Three points. → Select the update file.

💡

MIUI Updater is the only officially supported upgrade method that does not deprive you of warranty and does not require technical skills.

5. Method 2: Fastboot firmware (for official and custom firmware)

If you want to install a specific version MIUI (For example, if you go from China to Global, or flash custom build, you need a Fastboot, which requires an unlocked bootloader and erases all data.

🛠️ What's the matter:

• 💻 PC with installation ADB/Fastboot and Mi Flash Tool
• 🔌 Cable USB (preferably original)
• 📁 Firmware in.tgz or.zip format (for Xiaomi 13 Ultra, look for files marked ishtar)
• 🔋 Battery charge > 60%

📌 Step-by-step instruction:

1. Unpack the archive with firmware in a folder without Cyrillic characters (for example, C:\ishtar_fastboot).
2. Turn off the phone and press Volume Down + Power to enter the Fastboot (a hare in a hat-eared hat will appear on the screen).
3. Connect your phone to your PC and check for device detection: fastboot devices should show a serial number.
4. Start the Mi Flash Tool (you can download it here):

After successful firmware, the phone will restart automatically.

⚠️ Note: If the Mi Flash Tool gives an invalid image or anti-rollback error, you are trying to flash the incompatible version (TKQMIXM, TKEUXM etc.) and download the correct firmware.

🔧 Solutions to Firmware Errors Through Fastboot:

💡

If the Mi Flash Tool is hanging on 99%, Don't turn off the cable. 10-15 If nothing has happened after that time, restart your PC and phone, then try again.

6. Method 3: Firmware through TWRP (custom-fix)

If you want to install custom firmware (like Pixel Experience or LineageOS), you’ll need to TWRP — Custom recovery: This method requires an unlocked bootloader and is only suitable for power users.

🔧 What to do before installation TWRP:

• Unlock the boot loader (see Section 3).
• Download TWRP for ishtar (see the current version on twrp.me or in Telegram chats).
• Download custom firmware (for example, with XDA).
• Download Disable Force Encryption (if the firmware does not support encryption).

📌 Installation instructions TWRP and custom firmware:

1. Move your firmware and Disable Force Encryption files to a memory card or internal phone memory.
2. Turn off the phone and press Volume Up + Power to log into the Fastboot.
3. Please. TWRP Fastboot: Fastboot Flash Recovery twrp-ishtar.img fastboot reboot recovery
4. In TWRP, make a backup of the current firmware (Backup → Select partitions → Swipe to Backup).
5. Run Wipe → Format Data (required for custom firmware!).
6. Install → Select ZIP → Swipe to Confirm Flash.
7. Install Disable Force Encryption (if necessary).
8. Reboot to the system (Reboot → System).

⚠️ Note: After installing custom firmware, do not update through OTA! This may lead to conflict with TWRP. All updates are manually installed through recovery.

🔍 Problems after firmware custom firmware:

• 🚫 Leica camera doesn’t work – download a separate Leica Camera Mod for your firmware.
• 🔊 No sound – check if the firmware supports your model (sometimes you need additional patches).
• 📶 Don’t catch the network – make sure the firmware supports your region (e.g. Global for Europe).

7.What to do if the firmware failed (the decision of the "brick")

If the Xiaomi 13 Ultra is not turned on after the firmware, it is stuck on the logo or it is gone to bootloop (cyclical reboot), do not panic. In 90% of cases, the device can be restored.

🚨 Symptoms and solutions:

🔧 How to enter EDL-mode (emergency firmware mode):

1. Turn off the phone.
2. Press Volume up + Volume down + Power for 10-15 seconds.
3. Connect the cable. USB The device should be identified as Qualcomm. HS-USB QDLoader 9008.
4. Use the Mi Flash Tool or QFil to Firmware in EDL-mode.

⚠️ Attention: Firmware in EDL-The mode requires an authorized Xiaomi account or a special box. SLA Auth Error. in this case, contact the service center.

💡 If nothing helps:

• Try flashing through Fastboot using the command: fastboot flash all firmware.img (replace firmware.img with your file name).
• Contact the Telegram chat on Xiaomi 13 Ultra – it often helps with specific cases.

8. Frequently Asked Questions (FAQ)