How to flash Xiaomi Redmi Note 6 Pro: all the ways from official updates to custom ROM

Why do you want to use the Redmi Note 6 Pro and what are the risks?

Xiaomi Redmi Note 6 Pro (codenamed tulip) was released in 2018, but still remains popular due to the balanced characteristics: Snapdragon 636 processor, dual front camera and a capacious battery of 4000 mAh. However, over time, official support for MIUI ends, and users face slowdowns, lack of security updates or the desire to install custom firmware like LineageOS or Pixel Experience.

The firmware can solve several problems: speed up work with optimized builds, get current versions of Android (for example, upgrade from Android 8.1 to 11+), remove Xiaomi’s built-in software or even restore the brick after unsuccessful experiments. But it is important to understand that improper actions lead to a complete loss of warranty, the risk of turning the phone into a brick or face problems in the operation of modules (camera, NFC, sensors).

In this article, we will analyze all the current ways of firmware Redmi Note 6 Pro - from official updates through MIUI Updater to install custom ROM through TWRP and Fastboot. Particular attention will be paid to unlocking the bootloader (without it custom firmware can not be installed) and solving typical errors like Anti-Rollback or Invalid IMEI.

1. Firmware Preparation: What to Do Before You Start

Before you start firmware, follow the mandatory steps, which can lead to data loss, device locking, or even physical damage (for example, interruption of the update process).

• 📱 Save all data: firmware erases internal memory. Use Mi Cloud, Google Photos or physical backup on PC via adb backup.
• 🔋 Charge the battery to at least 60%. When discharged during firmware, the device may turn off and stop turning on.
• 🔗 Check the model: in settings (Settings) → The phone must be specified exactly Redmi Note 6 Pro (tulip code!
• 🖥️ Install drivers: for Windows, download Mi Unlock Tool (includes drivers), for Linux/macOS — adb and fastboot via package managers.

If you plan to install custom firmware, be sure to unlock the bootloader (instructions in the next section).For official updates via MIUI Updater or Recovery, unlocking is not required, but forced rollback to the old version of MIUI can lock the device due to the Anti-Rollback mechanism.

⚠️ Note: If your Redmi Note 6 Pro is purchased in China (market version) CN), European or Global Firmware MIUI can block the network due to differences in modem files. → The phone. → Version. MIUI.

2 Unlocking the bootloader: without this custom firmware cannot be installed

Xiaomi blocks the bootloader on all devices, including the Redmi Note 6 Pro. This means that installing TWRP or custom firmware is impossible without first unlocking.The process takes 3 to 360 hours (depending on Xiaomi's policy) and requires an association of the Mi Account to the device.

Instructions for unlocking:

1. Link your Mi Account to your phone in Settings → Mi Account.
2. Activate USB debugging in Settings → About Phone → MIUI version (click 7 times on the line, then go back to Additional → For Developers).
3. Connect the phone to the PC and confirm the debugging permission.
4. Download Mi Unlock Tool from the official website and run the utility on behalf of the administrator.

Once the bootloader is unlocked, the phone will automatically reset to factory settings! There will also be a warning when the bootloader is unlocked - this is normal and does not affect work.

3. Firmware methods: which one to choose?

There are 4 main ways to flash the Redmi Note 6 Pro, each of which is suitable for different purposes. The choice depends on the current state of the device, the purpose of the firmware and your experience.

For most users, the best option is to use firmware via Recovery (if you need to install custom ROM) or Fastboot (if you need to restore the official MIUI). EDL Mode is used only in extreme cases, as it requires special equipment (Qualcomm HS-USB QDLoader 9008) and risks permanently blocking IMEI.

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If you're flashing your device for the first time, start with the official MIUI via Fastboot. It's the safest way to get your phone back to factory status.

4. Firmware through Fastboot: step-by-step instructions

The method is suitable for installing official stock firmware (for example, when recovering from a failure) or forced updating. Windows/Linux, cable USB and the Mi Flash Tool utility.

Step 1. Download the firmware.

• 📥 The official firmware for the Redmi Note 6 Pro (tulip) is available on the website MIUI ROM. Choose the version of Fastboot (file with.tgz extension).
• 🔍 For stable work, we recommend the latest global (Global) or European (EEA) Avoid Chinese assembly (CN) Versions – They may not support Google Services.

Step 2: Prepare the Mi Flash Tool

1. Unpack the downloaded archive with firmware in a folder without Cyrillic characters (for example, C:\MIUI\tulip_global).
2. Download the Mi Flash Tool and install it.
3. Launch the utility on behalf of the administrator.

Step 3. Sweep through the device.

1. Turn off the phone and press Volume Down + Power to log into the Fastboot.
2. Connect your phone to your PC. In the Mi Flash Tool, press Refresh, the device needs to be determined.
3. Click Select and point the way to the folder with unpacked firmware.
4. At the bottom, select Clean All (complete cleaning) or Clean All and Lock (bootloader locking).
5. Press Flash and wait for completion (5-10 minutes). the phone will reboot automatically.

⚠️ Note: If after firmware the phone is stuck on the logo MI or reboots in a loop, try flashing again with the Clean all and lock option. If the problem persists, the firmware is incompatible with your Anti-Rollback version (see Error Solution section").

5. Install custom firmware (TWRP + ROM)

Custom firmware like LineageOS, Pixel Experience or Havoc-OS allows you to get the latest version of Android, remove Xiaomi’s bloatware and improve performance.

• 🔓 Unlocked loader (see section 2).
• 📱 Established custom recovery TWRP.
• 📦 Compatible firmware for tulip.

Step 1. Install TWRP

Download the latest version of TWRP for Redmi Note 6 Pro from the official website.

fastboot flash recovery twrp-3.7.0_9-0-tulip.img


fastboot boot twrp-3.7.0_9-0-tulip.img

Step 2. Prepare the firmware

• 📥 Download. ZIP-Firmware archive (e.g. LineageOS 18.1 for Android 11).
• 🔄 At the first installation of custom ROM Also download GApps (Google Services) and, if necessary, Magisk for root rights.
• 📤 Transfer all files to your phone or SD-map.

Step 3. Flow through TWRP

1. In TWRP, click Wipe → Advanced Wipe and tick Dalvik, Cache, System, Data.
2. Go back to the main menu and select Install, then point the way to the main menu. ZIP-firmware.
3. After installing the firmware, repeat the step for GApps and Magisk (if needed).
4. Reboot → System: The first launch can take 10-15 minutes.

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Castom firmware does not support the default encryption, and if the phone asks for a password after installation but does not accept it, reset via TWRP.

6. Solving typical firmware errors

Even if you follow the instructions accurately, you can get errors, and let's look at the most common ones and how to fix them.

The Anti-Rollback bug is one of the most insidious. Xiaomi has introduced a security mechanism that locks the device when you try to roll back on the old version of MIUI. For example, if the phone is MIUI 12.5 and you are trying to flash MIUI 10, the device locks with the words This device is locked. Solutions two:

1. Find firmware with the same or newer Anti-Rollback number (indicated in the file name, such as ARBv4).
2. Swipe through EDL Mode (requires an authorized Xiaomi account).

IMEI loss occurs when a modem or NVRAM partition is damaged.

1. Download the NVRAM backup for the Redmi Note 6 Pro (see 4PDA or XDA forums).
2. Squeeze it through. TWRP conventionally ZIP-archive.
3. Restart the device and check the IMEI in *#06#.

7. FAQ: Answers to Frequent Questions