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Flash firmware on Realme C25s

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How to flash Realme C25s?


Why reinstall the firmware?

The operating system keeps getting errors.

Some installed applications do not open.

Some programs from the Play Market do not start.

The phone restarts by itself for no reason.

The phone is slow.

You want to update the firmware, as it does not suit you in terms of functionality.





Where can I find the firmware?

On the official Internet resource of the phone manufacturer.

On specialized resources where users post custom or official OS.


What should be done before installing the firmware?

Create a backup copy of user data and transfer it to your computer.

Insert an SD card into your phone to write the firmware to it.

Determine your smartphone model.

Fully charge your phone battery.

Find and download the archive with Firmware. Place it on the SD card.





Installing TWRP Recovery

Install the Official TWRP App from the Play Store on your phone. And run this application.

When you start the application for the first time, you must consent to future manipulations, as well as consent to granting the application Superuser rights. Check the checkboxes and press the 'OK' button.

After moving to the next screen, select the 'TWRP FLASH' item and provide the application with root rights.

TWRP

On the main screen of the application, click 'Select Device', and find your phone model.

After selecting a device, the application will direct the user to a web page to download the appropriate modified recovery environment image file. Download the suggested *.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.

After the burn process is complete, 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 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 the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically..





Firmware via TWRP

TWRP

Before flashing, you need to clear the 'Cache' and 'Data' sections, press 'WIPE' on the main screen. You will delete all user data from the phone, this will avoid software errors and other problems.

You can start flashing. Click the 'Install' button.


TWRP

The file selection screen appears. At the very top there is a 'Storage' button for selecting an SD card.

Select the location where you copied the files..



TWRP

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, this is accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.

When the procedure for installing the firmware is completed, the message 'Successful' appears on the screen.





Summary: Operating system: Android 11, Realme UI 2.0; Processor: Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55); Chipset: MediaTek Helio G85 (12nm); GPU: Mali-G52 MC2; Internal memory: 64GB 4GB RAM, 128GB 4GB RAM; External memory: microSDXC (dedicated slot); Type: IPS LCD, 480 nits (typ), 570 nits (peak); Size: 6.5 inches, 102.0 cm 2; Resolution: 720 x 1600 pixels, 20:9 ratio; Body build: Glass front, plastic back, plastic frame; SIM: Dual SIM (Nano-SIM, dual stand-by); Dimensions: 164.5 x 75.9 x 9.6 mm (6.48 x 2.99 x 0.38 in); Weight: 209 g (7.37 oz); Colors: Water Blue, Water Gray; 2G Network: GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2; 3G Network: HSDPA 850 / 900 / 2100; 4G Network: 1, ...

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