Installing and flashing Android on Meizu M3 Note

Model Meizu M3 Note (also known as M681) has long remained a bestseller due to its excellent combination of price and performance. However, over time, official support from the Chinese manufacturer ceased, and users were faced with the need to look for alternative ways to update the system. Many owners are wondering how to install the latest version Android on this device in order to return it to its former speed and up-to-date security features.

The process of replacing the operating system on Meizu smartphones has its own unique features that differ from standard procedures on other brands. Unlike many competitors, it often requires working with a proprietary bootloader and specific PC utilities. Proper preparation and understanding of the architecture Flyme OS are critical to the successful completion of the operation without turning the phone into a “brick.”

In this guide we will examine in detail all the steps: from unlocking the bootloader to installing custom firmware based on pure Android. You'll learn what tools are needed, how to prepare for possible risks, and where to find stable software builds. Follow each step carefully, as any deviation from the instructions may lead to data loss or malfunction of the equipment.

Preparation of the device and necessary tools

Before starting any manipulations with the system partition, you must ensure a stable working environment. You will need a computer running Windows, since most utilities for Meizu are optimized for this OS. Also make sure that the smartphone battery is charged at least 60%, since the firmware process is energy-consuming and critical to power outages.

The most important step is to create a backup copy of all personal data. When installing a new system, the device memory will be completely cleared. Use cloud services or copy files to your computer manually. Do not forget to export contacts and notes, as it will be impossible to restore them without a backup.

⚠️ Attention: Installing third-party software will void the official warranty (if it is still valid) and may lead to unstable operation of the communication modules or camera. You perform all actions at your own peril and risk.

To communicate with the phone, you will need an original or high-quality certified USB cable. Cheap cables often only provide charging, but do not transfer data, which will lead to errors in recognizing the device in the task manager. Install the latest versions of ADB and Fastboot drivers on your computer.

Unlocking the bootloader and obtaining root access

Standard procedure for installing custom firmware on Meizu M3 Note requires an unlocked bootloader. In the Meizu ecosystem, this process is integrated into the Flyme account settings. Go to menu Settings → Flyme Account and log in with your account. If you don’t have an account, you need to register it.

After authorization, go to the access rights section. Here you need to activate the switch Root access. The system will request identity confirmation via SMS or account password. After confirmation, the phone will reboot and you will receive full superuser rights necessary to modify system files.

Unlocking the bootloader on Meizu devices often occurs automatically after obtaining root access and installing a special recovery. However, in some regions or on certain software versions, you may need to submit a request to the manufacturer. Make sure that the option is enabled in the developer settings USB debugging.

Having superuser rights allows access to the system partition, but also increases the vulnerability of the device. Be careful when granting rights to third-party applications. Incorrect use of Root access can lead to damage to system libraries.

Installing custom TWRP recovery

The standard Meizu recovery menu does not allow installing firmware that is not signed by the manufacturer. To solve this problem, you need to install third-party recovery, the most popular of which is TWRP (Team Win Recovery Project). The image of this recovery must be specially compiled for the M681 model.

The installation process is carried out through Fastboot mode. Turn off your smartphone and hold down the button combination Volume Down + Power until the Fastboot logo appears. Connect your phone to the PC and open the command line in the ADB tools folder.

fastboot flash recovery twrp-m3note.img

After successfully recording the image, do not reboot the phone into normal mode immediately. This may cause stock recovery to overwrite TWRP. Instead, use the command to immediately boot into recovery mode:

fastboot boot twrp-m3note.img

⚠️ Warning: When booting into TWRP for the first time, the system may ask for permission to modify the system partition. Be sure to swipe right to confirm (Allow Modifications), otherwise the recovery will not be able to write new firmware.

The TWRP interface is touch-sensitive and intuitive. Here you can make a full backup of the current system (Nandroid Backup), clear partitions and install ZIP archives with firmware. It is recommended to immediately make a backup copy of EFS and NVRAM so as not to lose IMEI and modem data.

What to do if TWRP does not start?

If after the firmware the phone goes into a cyclic reboot, try entering Recovery mode again by holding Volume Up and Power. If this doesn't help, the recovery image may be damaged or not suitable for your bootloader version. Try a different version of TWRP.

The process of installing new Android firmware

Now that the preparatory steps are completed, you can proceed to the actual installation of the new operating system. Download the firmware of your choice (for example, LineageOS, Pixel Experience or custom Flyme) and place the ZIP file in the phone’s internal memory or SD card.

In the TWRP menu, select Wipe (Cleanup). To cleanly install a new system, you need to format the Dalvik / ART Cache, System, Data and Cachepartitions. Do not format the partition Internal Storageif the firmware file is on it.

Partition	Action	Purpose
System	Format / Wipe	Removing the old OS
Data	Format	Cleaning user data
Cache	Wipe	Clearing the application cache
Dalvik	Wipe	Resetting the compilation cache

After clearing, return to the main menu and select Install. Find the downloaded archive with the firmware and confirm the installation by swiping. The process may take from 5 to 15 minutes depending on memory speed and system size. Do not interrupt the process or disconnect the cable.

If you plan to use Google services, but they are not in the firmware (GApps), install the appropriate package immediately after installing the system, while the phone is still in Recovery mode. Do not reboot between installing ROM and GApps.

System setup after the first boot

The first startup after installing new firmware usually takes longer than usual. This is due to application optimization and ART cache creation. The system logo or boot animation may be displayed on the screen. Be patient and do not try to manually restart your device in the first 10 minutes.

Once the download is complete, you will be greeted by the Initial Setup Wizard. Here you can select your language, connect to Wi-Fi, and sign in to your Google account. If you installed custom firmware, the interface may differ from the usual one Flyme.

Be sure to check the operation of the main modules: camera, microphone, speakers and touch screen. In custom builds, sometimes there are bugs with hardware drivers. Go to settings About phone and make sure that the Android version is as expected.

⚠️ Attention: If after booting you see the message “The com.android.phone process has failed” or there is no network, this may indicate a problem with the modem partition. In this case, you may need to flash the stock dam modem firmware via the SP Flash Tool.

To increase autonomy, it is recommended to calibrate the battery. Fully drain your phone before turning it off, then charge it to 100% while it's off. This will help the system correctly display the charge percentage.

Possible problems and ways to solve them

In the process of experimenting with the software on Meizu M3 Note Users may encounter various errors. One of the most common problems is “bootlap” (cyclic reboot). This often happens when there is a kernel version conflict or partitions are not properly cleaned before installation.

If the phone does not turn on or constantly reboots, try entering Recovery mode and doing Wipe Data/Factory Reset. If this doesn't help, the bootloader may be damaged. In this case, you will need to return to the stock firmware via Download Mode using the SP Flash Tool utility.

Another common problem is VoLTE or Wi-Fi Calling not working in custom firmware. These functions are highly dependent on operator support and implementation in the system core. Often the only solution is to roll back to the official version of Flyme or wait for updates from the developers.

• 🔴 The phone is not visible on the computer: Check the Mediatek VCOM drivers and try a different USB port or cable.
• 🔴 Error 7 when installing in TWRP: The firmware file is damaged or is not suitable for this model. Download the archive again.
• 🔴 IMEI disappears: Restore the NVRAM backup from TWRP or reflash the modem dump.

For in-depth diagnostics, use system logs. Enable USB debugging and connect your phone to a PC with Android SDK installed. The command adb logcat will allow you to track the boot process and identify the cause of the failure in real time.

What to do if you forgot the pattern key after the firmware?

If you installed a new firmware and cannot unlock the screen, go to Recovery mode (TWRP). Go to the Wipe section and select Format Data. This will delete all data, including the lock key. After that, perform a clean installation of the system again.

Is it possible to return to the official Flyme?

Yes, it is possible. You will need stock firmware in update.zip format for Recovery or images for SP Flash Tool. Download the official firmware from the Meizu website, place it on your phone and install via TWRP or use Download Mode for a full recovery.

Is it safe to use root access in 2026?

Using root access carries security risks, since many banking applications and games with anti-cheat do not work on rooted ones devices. However, there are methods for hiding Root (for example, Magisk Hide) that allow you to bypass these restrictions.