Flash firmware on Xiaomi 12 ULTRA
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How to flash Xiaomi 12 ULTRA?
Why reinstall the firmware?
Errors constantly appear in the Android OS.
Some applications stop opening.
Some applications from the Play Market do not start.
The phone turns off for no apparent reason.
The phone began to work slowly.
You are not satisfied with the possibilities of the stock firmware.
Where can I find the firmware?
On the official website of the manufacturer.
On certain sites where developers post custom or official OS.
What should be done before installing the firmware?
Back up your contacts and user data and transfer it to your computer.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Determine your smartphone model.
Fully charge your device's battery.
Find and download the archive with Firmware. And place it on the SD card.
Installing TWRP Recovery
Download the Official TWRP App to your phone from the Play Market. And install this app.
When you start the application for the first time, you must agree to install a new firmware and all the risks associated with this, as well as agree to grant the application Superuser rights and click the 'OK' button.
In the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, click 'Select Device', and select your phone model.
After selecting the phone, the application will redirect the user to a web page to download the modified recovery environment image file. Download the proposed *.img file.
After downloading the image file, return to the main screen of the Official TWRP App and press the 'Select a file to flash' button. Then we tell the program the path where the file loaded in the previous step is located.
Press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
When the message 'Flash Completed Succsessfuly!' appears on the screen. Click the 'OK' button. The TWRP installation procedure is now complete.
Transfer the necessary files to the SD card. Using a PC or laptop card reader.
Insert a SD memory card into the phone.
To reboot into recovery, you need to enter the menu accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. Select 'Reboot' and then click on the 'REBOOT RECOVERY' button.
Firmware via TWRP
Before flashing, it is recommended to clear the 'Cache' and 'Data' sections. This will delete all user data from the device, but avoid a wide range of software errors and other problems. You must press 'WIPE' on the main screen.
You can start flashing. Click the 'Install' button.
The file selection screen is displayed. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the location where you copied the files. Press the OK button.
Find the file we need and click on it. A screen opens with a warning about possible negative consequences, you need to check the item 'Zip signature verification', which will avoid using corrupted files when writing to the phone's memory sections.
The procedure for writing files to the phone's memory will begin, accompanied by logging and filling in the progress bar.
After the firmware installation procedure is completed, the 'Successful' message appears on the screen.
Summary: OS: Android 12; Chipset: Qualcomm SM8450 Snapdragon 8 Gen 1 (4 nm); CPU Speed: 1 x 3.19 GHz 3 x 2.75 GHz 4 x 1.8 GHz; GPU: Qualcomm Adreno 730; Primary display: LTPO AMOLED 6.73" 3200 x 1440 pixels 1B colors 521 ppi, Corning Gorilla Glass Victus; Secondary display: No; RAM: 8, 12 GB; Internal memory: 256, 512 GB; Memory Card: No; Primary camera: 50 MP 48 MP 8160 x 6120 pixels Dual-LED flash Third rear camera 48 MP, TOF 3D, (depth), Aperture (F/2.0, F/4.1, F/2.2), Dual Pixel Phase detection autofocus, Laser autofocus, Optical image stabilization, HDR, Panorama; Video: 7680 x 4320 pixels 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240/960/1920fps, gyro-EIS, HDR10 rec.; Secondary camera: 20 MP 5384 ...
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