Flash firmware on Samsung Galaxy S3 G3812B Slim
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How to flash Samsung Galaxy S3 G3812B Slim?
Why reinstall the firmware?
Errors in the Android OS start to appear regularly.
Some applications will not open.
Many applications from the Play Market do not start.
The phone restarts 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 website of the manufacturer.
On Internet resources where users post custom or official OS.
What should be done before installing the firmware?
Back up your phone's user data.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Find information about your smartphone model.
Charge your phone fully. If the battery runs out during boot, the device will no longer turn on. It will be difficult to restore it.
Download archive with Firmware.
Installing TWRP Recovery
Download the Official TWRP App from the Play Market. And install it.
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.
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 find your phone model.
After selecting the phone, the program will redirect the user to a web page to download the corresponding image file of the modified recovery environment. 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.
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 necessary files to the SD memory card. Using a PC or laptop card reader.
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, you need to clear the 'Cache' and 'Data' sections, press 'WIPE' on the main screen. This will delete all user data from the device, but avoid a wide range of software errors and other problems.
Now 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 device's memory will begin, accompanied by the appearance of inscriptions in the log field and the completion of the progress bar.
When the procedure for installing the firmware is completed, the message 'Successful' appears on the screen.
Summary: Chipset: Qualcomm 8225Q Snapdragon 200; CPU: 4 Cores @ 1.2GHz ARM Cortex-A5; GPU: Adreno 203; RAM: 1GB; Internal Memory: 8GB; External Memory: microSD; Camera Resolution: 5 Megapixel; Camera Flash: LED; Front Camera: 0.3 Megapixel; Other Functionalities: Digital Compass, Accelerometer, Proximity Sensor; Speaker: Mono; Battery Capacity: 2100mAh; Battery Type: ; Display Resolution: 540x960px; Display Size: 57x101mm (2.24x3.98") ~244PPI; Display Diagonal: 4.52"; Display Type: 16M TFT; Secondary Display Resolution: ; Input: Capacitive Touchscreen; Talk Time: ; Standby Time: ; Smart Phone OS: Android OS, v4.2; Java: MIDP 2.0; Vibration: Yes; Ringtone: ; WiFi: Wi-Fi 802.11 ...
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