Xiaomi Redmi Note 9S: how to reset to factory settings

Xiaomi’s Redmi Note series is famous for its price-performance ratio, but even a reliable device can take drastic measures over time. If your Redmi Note 9S is unstable, hanging, or you’re just planning to sell the gadget, the most effective solution is to return to its original state. This process completely clears internal memory of user data, returning the software to the “out of the box” state.

The reset procedure, also known as Hard Reset or Factory Reset, affects all memory areas that are designed to store the owner’s information, which means that photos, contacts, installed applications and accounts will be permanently deleted. Before starting any manipulations, it is critical to make sure that you have an up-to-date backup of the data, since it will be impossible to restore it after formatting without a backup.

In this article, we will discuss in detail all available methods for resetting settings on the Xiaomi Redmi Note 9S. We will look at the standard methods through the operating system menu, as well as methods for forced recovery through Recovery mode, which is necessary in cases where the device does not boot or lock.

Preparation of the device for the discharge procedure

Before you start the memory cleanup mechanism, you need to perform a number of preparatory steps. Ignoring this step can lead to loss of important data or problems with activation of the device after restarting. First of all, make sure that the battery level is at least 50-60%. The process of formatting and reinstallation of system files is energy intensive, and suddenly turning off the smartphone at this point can damage the software shell.

The second critical step is synchronizing your data with the cloud or transferring it to an external storage medium. In the Android ecosystem, you can do this through a Google account or Xiaomi's Mi Cloud. Also, be sure to check for passwords from your accounts, because once reset, the system will require them to confirm ownership (FRP protection). If you forget the password from your Google account, it will be extremely difficult to unlock your phone.

⚠️ Attention: Extraction SIM-MicroSD cards and memory cards before the procedure is a mandatory security requirement, which will protect your contacts on the SIM card and files on the external drive from accidental formatting.

For ease of preparation, use the following checklist, which will help you not to miss anything:

Resetting settings through the smartphone menu

The safest and easiest way to get the Xiaomi Redmi Note 9S back to factory status is to use the built-in operating system functionality. This is suitable for cases when the phone turns on, the screen responds to touch, and you have access to settings. The MIUI shell action algorithm is fairly standardized, but has its own features depending on the firmware version.

To start, go to the main menu and find the Settings icon. In the options list that opens, you need to scroll down to the About section. This is where the main parameters of the device are hidden. In some versions of MIUI, the reset button may be directly in this menu, in others you will need to go to the Advanced Settings or Additional.

Find Reset (or Factory Settings) and the system will offer two options: Reset all settings (saves files but changes system settings) and Erase all data (full reset). We need the second option. After clicking, the system will issue a warning that all data will be deleted. Confirm the action by entering a graphical key or unlock pin, if installed.

Once confirmed, the phone will restart and the cleaning process will begin, the Android or MIUI logo may be displayed on the screen with a progress indicator, do not interfere with the device at this point, waiting time varies from 5 to 15 minutes depending on the amount of memory filled.

Use Recovery Mode for Hard Reset

If the smartphone doesn't turn on, freezes on the logo, or the touch screen doesn't respond, Recovery mode comes to the rescue, a recovery environment that is stitched deep into the device's memory, allowing diagnostic and recovery operations regardless of the state of the main operating system, which is entered by a combination of physical buttons.

To log into Recovery on the Redmi Note 9S, do the following: turn off the device completely. Then simultaneously press the Volume Up and Power buttons. Hold them until the Mi logo appears, after which the power button can be released, continuing to hold the volume button. When the Recovery menu appears (usually a black screen with text or an Android logo with an exclamation mark), release all the buttons.

Navigation in the Recovery menu is done with volume buttons (up/down), and the power button selects the item. You need to find Wipe Data or Clear Data. In some recovery versions, you may need to select Wipe All Data. Confirm the choice, the system will warn you again about the consequences. Choose Confirm or Yes.

Once the memory cleanup is complete, a success message will appear in the Recovery menu. Select Reboot -> Reboot to System. The first run after the reset will take longer than usual, as the system reconfigures files and checks the integrity of partitions.

Reset via computer and Mi Flash Tool

For advanced users who have experienced serious software errors, there is a method of flashing or resetting via a PC. ADB/Fastboot It allows not only to clean the data, but also to rewrite the system partition clean, which eliminates any software conflicts.

Before you start, download the firmware for your specific model (Redmi Note 9S, codename curtana) in Fastboot format (extension.tgz). Unpack the archive in the root of the C disk so that the path does not contain Cyrillic and spaces. Transfer the phone to Fastboot mode: turn off the phone, pinch Volume Down and Power until the image of the hare appears in the repair hat.

Connect the device to the computer through high-quality USB-Launch the Mi Flash Tool on behalf of the administrator. Press the Refresh button to let the program see the device. In the bottom corner of the utility window, select the Clean all option, which is the equivalent of a full reset. Press Flash and wait for the process to end. Green indicator "Success" will report the completion.

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Use the original. USB-cable USB 2.0 on the computer motherboard (back of the system unit). Ports on the front panel or hubs may give insufficient power, which will lead to a firmware error.

Deleting Google Account and Protecting FRP

One of the most important security features in Android is FRP (Factory Reset Protection), which prevents the use of a stolen or lost phone after resetting. If you did not delete your Google account from your device settings before Hard Reset, the phone will require you to enter a password from that account after you turn on.

This means that even a full reset via Recovery won’t get around locking if you don’t know the password.So if you’re resetting your phone to sell or transfer to another person, be sure to log out of all accounts. Go to Settings –> Accounts and Sync (or just Accounts), select Google and click Delete Account. Repeat the same for Mi Account.

If the phone is already locked and reset FRP, If you forget your password, the unlocking process becomes complicated and requires you to contact the service center with receipts of ownership. IMEI.

Typical post-reset problems and their solution

Once you return to the factory settings, users may encounter a number of nuances, such as the phone may respond to commands in the first few days longer than usual. 10-15 This is because Android background services are indexing files and optimizing applications, and it's not worth loading your device with heavy games or installing a lot of software.

Another common problem is that the battery runs out quickly in the first charge cycles, and the system relearns the energy saving algorithms by analyzing your usage habits, and usually after 2-3 days, the autonomy returns to normal, and if the phone warms or discharges instantly even after a week, it may have failed during the reset process, and the procedure should be repeated, making sure that the system files are intact.

⚠️ Warning: If the phone is constantly restarted (cyclic reboot) after resetting or hangs on the logo for more than 20 minutes, this indicates damage to the system partition).

Also, you have to reset all the apps after you reset, and when you first set up, you'll have to restore the data from Google's backup, and be careful, if you restore the backup right away, you can also return the error or virus that caused the reset, and you'll want to set the phone up as new and install the apps selectively.

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A complete reset is a radical, but often the only means of software-based resuscitation of a smartphone, and the main rule of success is to have a fresh backup and a charged battery before starting.

Frequently Asked Questions (FAQ)