Flash firmware on Samsung Galaxy A03s
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How to flash Samsung Galaxy A03s?
Why reinstall the firmware?
The operating system keeps getting errors.
Some installed applications do not open.
Many programs from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone began to slow down a lot.
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 services on which developers lay out custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data, contacts and photos 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.
Download the archive with Firmware and place it on the SD card.
Installing TWRP Recovery
Download and install the Official TWRP App from the Play Market.
When you start the application for the first time, you need to give consent to future manipulations, as well as to give consent to granting the application Superuser rights and click the 'OK' button.
After moving to the next screen, select the 'TWRP FLASH' item and provide the application with root rights.
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.
When the file is loaded, return 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.
Press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Write the firmware and other necessary files to the SD card. Using a PC or laptop card reader, it will be much faster.
Insert a memory card into your 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, 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.
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. 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, 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: OS: Android 11, One UI 3.1 Core; Chipset: MediaTek MT6765 Helio P35 (12nm); CPU: Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53); GPU: PowerVR GE8320; Type: PLS LCD; Screen Size: 6.5 inches, 102.0 cm 2 (~81.8% screen-to-body ratio); Resolution: 720 x 1600 pixels, 20:9 ratio (~270 ppi density); Card slot: microSDXC; Internal: 32GB 3GB RAM, 64GB 4GB RAM; Triple camera: 13 MP, f/2.2, (wide), AF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth); Features: LED flash; Video: 1080p@30fps; Single camera: 5 MP, f/2.2; Loudspeaker: Yes; 3.5mm jack: Yes; Sensors: Fingerprint, accelerometer, proximity; Type: Li-Po 5000 mAh, non-removable; Charging: Fast charging 15W; Dimensions: 164.2 x 75.9 x 9.1 mm ...
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