Flash firmware on Samsung J2 Pro
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How to flash Samsung J2 Pro?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some applications do not open, reinstalling which does not lead to a positive result.
Many applications from the Play Market do not start.
The phone restarts or shuts down by itself.
The phone started to work slowly.
You have decided to try a different version of Android.
Where can I find the firmware?
On the official website of the phone manufacturer.
On Internet resources where users post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of all personal information: contacts, photos and transfer it to another computer.
Insert SD card. An SD card is needed to write firmware to it.
Find out the exact model of your smartphone.
Fully charge your phone battery.
Download archive with Firmware.
Installing TWRP Recovery
Download the Official TWRP App to your phone from the Play Market. And install this app.
When you start the application for the first time, you must agree to install the firmware, as well as agree to grant 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 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, 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.
Now 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 is now complete.
Copy the necessary files to the SD memory card. Using a PC or laptop card reader.
Insert a SD 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 delete all user data from the phone, this will avoid many problems. press 'WIPE' on the home screen.
Press the 'Install' button to start the flashing.
The file selection screen is displayed. At the very top is the 'Storage' button, select the location where the firmware file is located.
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, you need to check the item 'Zip signature verification', which will avoid using damaged files during recording.
The procedure for flashing the phone will begin, 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: Camera Resolution: 8-megapixel (CMOS); Camera flash: Yes; Camera Features: Auto-focus; Camera Aperture: f/2.2; Max Video Resolution: 1280 x 720 px; Video frames per second: 30; Selfie Cam Resolution: 5-megapixel (CMOS); Selfie Features: f/2.2 aperture; Display size: 5 inches; Display dots per inch: 293.58 DPI; Display Type: Super AMOLED; Color Mode: 16777216 colors; Display Resolution: 1280 x 720 px; Displays superficy: 10.68 square inches; Displays superficy: 271.27 square mm; Display total pixels: 921600; Operating System: Android 6.0.1 Marshmallow; CPU Cores: 4; Processor Speed: 1.5GHz; RAM: 2GB; Weight (grams): 138 g; Thickness: 8 mm; Width: 71.1 mm; Height: 142.4 ...
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