Xiaomi Mi 9 SE remains a popular device due to its compact form factor and powerful Snapdragon 712 processor, however, the release of new versions of Android and security patches requires regular intervention in the system software. Owners often face the need to switch to a more recent version of MIUI or even HyperOS to get the latest interface features and improve the stability of the gadget. The firmware process can seem difficult for a beginner, but with clear adherence to the algorithms, it becomes quite an affordable procedure.
There are several ways to upgrade software, from standard air updates to manually installing archives through recovery mode. The choice of the specific method depends on the current firmware version, the region of the device (Chinese or global version), and the availability of an unlocked bootloader. In this article, we will discuss all the available options in detail, paying special attention to data security and preventing possible errors that can turn the phone into a brick.
Before any manipulations are initiated, it is critical to assess the battery status and the quality of the Internet connection. Unstable connection or discharge below 50% at the most critical moment can interrupt the recording of system files, which will cause the device to malfunction. Therefore, the preparatory stage is no less important than the technical part of the process of flashing your Mi 9. SE.
Preparation of the device for the installation of new firmware
The preparation should begin with a complete backup of all important data, since some methods of updating involve a complete reset of user information. MIUI This allows you to save contacts, messages and settings to the Xiaomi Cloud or local drive. Neglecting this step can lead to irretrievable loss of photos and documents, so you can not ignore the backup completely.
Next, you need to free up enough space in the internal memory. Update archives can weigh from 2 to 4 gigabytes, and the system needs an additional buffer to properly decompress and install. If the memory is full, the process can be interrupted during the integrity check phase of the files, which will cause a boot error.
⚠️ Warning: Make sure the battery is at least 60-70% A sudden power outage during the recording of the system partition can damage the bootloader, recovery after which is possible only in the service center.
Also worth checking your device model in the Settings → About Phone menu. There are different modifications for Xiaomi Mi 9 SE (codenamed grus), and firmware from the regular Mi 9 version will not work. Using incompatible files is a direct path to cyclic reboot.
Update via OTA: a standard method for users
The easiest and safest way to get a new version of software is to use the built-in OTA (Over-The-Air) mechanism, which independently checks the servers for the availability of current packages for your region and model. Usually, notifications come in gradually, so if the next device already has an update, your device may have it in a few days.
To make sure you check, go to Settings → About Phone → MIUI and click on the system logo. If the update is available, a download button will appear, ideal for those who want to save all the data and do not want to get into technical nuances.
- 📲 Advantages of the method: saving all user data, automatic driver installation, minimal risk of error.
- ⏳ Speed: Depends on the speed of the Internet connection, the installation takes 10-15 minute.
- 🔄 Restrictions: you can not downgrade the Android version or switch from Chinese firmware to global without unlocking.
Sometimes users are faced with a message “No updates found”, although the new version has already been officially released, in such cases, it helps to clear the cache of the “Update” application through the developer menu or wait for a wave mailing from the manufacturer.
💡
If the update doesn’t come through the menu, try changing the region in the settings (like India or Global), checking for a new version, and then returning the original region.
Manual installation via Recovery Mode (without PC)
If the automatic update doesn’t work or you want to install a specific version of the firmware manually, you can use Recovery mode. This requires you to download the firmware archive in.zip format from the official website or proven resources.
After downloading the file, go to the update menu and click the three dots in the top right corner of the screen. Select "Select firmware file" and specify the downloaded archive. The system will check the checksum and, if correct, suggest a reboot for installation.
☑️ Checklist before hand firmware
It is important to understand the difference between installation modes. If you put a newer version on top of an existing one, the data will be saved. However, if you try to roll back to an older version or change the region (for example, from China to Global), the system will require a data cleanup (Wipe Data).
| Transition type | Data retention | Requirements | Risk of error |
|---|---|---|---|
| Update (Upagrade) | Yes. | New version >= Current version | Low. |
| Recoil (Downgrade) | No (Wipe) | Unlocked loader | Medium. |
| Change of region | No (Wipe) | Unlocked loader | Medium. |
| China → Global | No (Wipe) | Unlocked loader | High-pitched |
⚠️ Note: When you try to install firmware in another region without unlocking the bootloader, you will get an error "Can't verify update.
Fastboot Firmware with Mi Flash Tool
The most powerful tool for working with Xiaomi software is the Mi Flash Tool for PC, which allows you to install firmware in.tgz (Fastboot ROM), which gives you complete control over memory partitions, a method often used to restore non-working devices or completely change the region.
To start, you need to unlock the bootloader through the official application in the Mi Unlock application. After obtaining permission (usually after 7 days of waiting) and unlocking, the phone is transferred to Fastboot mode by pressing the volume button when connected. USB-cable.
fastboot devicesThis command in the command line of the PC must output the serial number of the device, which will confirm the correct connection of the drivers. Next, in the Mi Flash Tool program, the path to the unpacked firmware and the installation mode are selected. clean_all Complete cleaning and clean installation of the system.
What if the Mi Flash Tool is flash error?
The firmware process takes 300 to 600 seconds. Once complete, the phone will automatically restart. The first run can take up to 10 minutes as the system optimizes applications and creates new configuration files.
Solving common mistakes and problems
During the upgrade process, users of Xiaomi Mi 9 SE may experience various crashes. One of the common problems is hanging on the MI logo (bootloop), this can occur due to damage to system files or a conflict of the modified kernel with a new version of Android.
If the device has gone into a cyclical reboot, try entering Recovery mode (pressing the power and volume button) and resetting (Wipe Data).This will delete all data, but often brings the phone back to life. If this does not help, you will need to flash it through Fastboot.
- 🛑 Error 7 in Recovery: occurs when you try to install old firmware on top of a new one or when a damaged archive is installed.
- 📉 Disappears after firmware: often occurs when flashing the modem, requires the installation of the original stock image of the modem or the full official firmware.
- 🔋 Quick discharge after the update: in the first 2-3 The system indexes files on the day, which is normal. If the problem persists, do a full reset (Wipe All Data).
Sometimes users complain about the camera after the update. In newer versions of MIUI, photo processing algorithms may change. If the quality of the images has decreased, try clearing the Camera app cache or installing a modified version (GCam) optimized for the Sony IMX586 sensor.
💡
90% of update errors are due to a damaged firmware file or a battery failure. Always check the checksums of downloaded files.