Flash firmware on Samsung J2 DTV
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How to flash Samsung J2 DTV ?
Why reinstall the firmware?
Errors constantly appear in the Android OS.
Some installed applications stop opening.
Some applications from the Play Market do not start.
The phone restarts for no reason.
The phone slows down a lot during operation.
You are not satisfied with the possibilities of the stock firmware.
Where can I find the firmware?
On the phone manufacturer's website.
On sites 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 the gadget. It must have enough memory for the firmware.
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. And place it on the SD card.
Installing TWRP Recovery
Download the Official TWRP App from the Play Market. And install it.
At the first start, you need to give consent to future manipulations, as well as consent to granting the Superuser rights to the application. Check the checkboxes and press the 'OK' button.
Going to 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 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.
After downloading the image file, go 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.
The recording process is very fast, and upon completion, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Copy the firmware and other necessary files to the SD card.
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 'Reboot' and then click on the 'REBOOT RECOVERY' button.
Firmware via TWRP
Before flashing, it is recommended to clear the 'Cache' and 'Data' sections. This will delete all user data from the device, but avoid a wide range of software errors and other problems. You must press 'WIPE' on the main screen.
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 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, accompanied by logging and filling in the progress bar.
After the firmware installation procedure is completed, the 'Successful' message appears on the screen.
Summary: Operating system: Android 5.1.1 Lollipop; Chipset: Samsung Exynos 3 Quad 3475; CPU: ARM Cortex-A7, 1.3 GHz, cores: 4; GPU: ARM Mali-T720 MP1, 533 MHz; Sensors: Proximity,Light,Accelerometer; Messaging: SMS,MMS,Email,IM; Browser: HTML,HTML5,CSS 3; Radio: Yes; GPS: GPS, A-GPS, GLONASS; Java: -; Colors: Gold; More Feature: -; Display size: 4.7 inches, 540 x 960 pixels, (~234 ppi); Display type: Super AMOLED capacitive touchscreen 16M color; Multitouch: Yes; Memory card: MicroSD, microSDHC, microSDXC; Memory internal: 8 GB, 1 GB RAM; GPRS: Yes; EDGE: Yes; Bluetooth: 4.1,A2DP; USB: 2.0, Micro USB; WLAN: 802.11 b, g, n, Wi-Fi Hotspot, Wi-Fi Direct; Speed: -; NFC: No; Infra ...
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