Flash firmware on Samsung Galaxy Core Duos
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How to flash Samsung Galaxy Core Duos?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some installed applications stop opening.
Many programs from the Play Market do not start.
The phone restarts for no reason.
The phone began to slow down a lot.
You are not satisfied with the functionality of the stock (official) firmware.
Where can I find the firmware?
On the official website of the phone manufacturer.
On specialized services 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 your phone to write the firmware to it.
Determine your smartphone model.
Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.
Find and download the 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 need to give consent to future manipulations, as well as to give consent to granting the application Superuser rights and click the 'OK' button.
On the next screen, select 'TWRP FLASH' and give the application root rights.
On the main screen of the application, click on the 'Select Device' drop-down list, and select your phone model.
After selecting a device, the program redirects the user to a web page to download the corresponding image file of the modified recovery environment. Download the suggested *.img file.
When the file is loaded, you need to 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.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Copy the required files to the memory card. Using a PC or laptop card reader.
Insert a memory card into the phone.
To reboot into recovery, you need to use a special item in the Official TWRP App menu, accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. Open the menu and select the 'Reboot' item, and then click on the 'REBOOT RECOVERY' button.
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.
Now you can start flashing. Press the 'Install' button.
The file selection screen appears. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the storage to which the files were copied.
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.
After completing the installation procedure, a 'Successful' message appears on the screen.
Summary: Operating System: Android v4.1 (Jelly Bean); SIM Slot(s): Dual SIM, GSM+GSM; SIM Size: SIM1: Micro; Network: 3G: Available, 2G: Available; Dimensions: 129.3 (H) x 67.6 (W) x 8.95 (T) mm; Weight: 124 grams; Colours: Blue White; Screen Size: 4.3 inches; Screen Resolution: 480 x 800 pixels; Pixel Density: 217 ppi; Display Type: TFT; Touch Screen: Capacitive Touchscreen, Multi-touch; Chipset: Qualcomm Snapdragon S4 Play MSM8225; Processor: Dual core, 1.2 GHz, Cortex A5; Graphics: Adreno 203; RAM: 1 GB; Internal Memory: 8 GB; Expandable Memory: Up to 64 GB; User Available Storage: Up to 4.5 GB; Resolution: 5 MP; Flash: LED Flash; Image Resolution: 2592 ...
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