Flash firmware on Xiaomi Redmi Note 9T
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How to flash Xiaomi Redmi Note 9T?
Why reinstall the firmware?
The operating system keeps getting errors.
Some applications do not open, reinstalling which does not lead to a positive result.
Some programs from the Play Market do not start.
The phone restarts for no reason.
The phone slows down a lot during operation.
You want to update the firmware, as it does not suit you in terms of functionality.
Where can I find the firmware?
On the website of your phone manufacturer.
On specialized resources where users post custom or official OS.
What should be done before installing the firmware?
Back up your phone's user data.
Insert an SD card into the gadget. It must have enough memory for the firmware.
Determine your smartphone model.
Fully charge your device.
Find and download the archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Download the Official TWRP App from the Play Market. And install it.
At the first start, you need to give consent to future manipulations, as well as consent to granting the Superuser rights to the application. Check the checkboxes and press the 'OK' button.
On the next screen, you need to select the 'TWRP FLASH' item and give the application root-rights.
On the main screen of the application, click 'Select Device', and find your phone model.
After selecting a phone, the application will direct the user to a web page to download the modified recovery environment image file. Download the proposed *.img file.
After downloading the image file, go to the main screen of the Official TWRP App and press the 'Select a file to flash' button. Select the file downloaded in the previous step.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
The recording process is very fast, and upon completion, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Copy the required files to the SD card. Using a PC or laptop card reader, it will be much faster.
Insert a 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 the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically..
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, which allows you to switch between types of memory.
Select the location where you copied the files..
Select the firmware file and click on it. A screen opens with a warning about possible negative consequences, as well as the item 'Zip signature verification'. This item should be checked by placing a cross in the check-box, which will avoid using damaged 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.
When the procedure for installing the firmware is completed, the message 'Successful' appears on the screen.
Summary: OS: Android 10, MIUI 12; Chipset: Mediatek MT6853 Dimensity 800U (7 nm); CPU: Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55); GPU: Mali-G57 MC3; Type: IPS LCD, 450 nits (typ); Screen Size: 6.53 inches, 104.7 cm 2 (~84.0% screen-to-body ratio); Resolution: 1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density); Protection: Corning Gorilla Glass 5; Card slot: microSDXC; Internal: 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM; Triple camera: 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth); Features: LED flash, HDR, panorama; Video: 4K@30fps, 1080p@30/60fps; Single camera: 13 MP, f/2.3, 29mm (standard), 1/3.1", 1.12µm; Video: 1080p@30fps; Loudspeake ...
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