Flash firmware on Samsung Galaxy J1 4G (2017)
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How to flash Samsung Galaxy J1 4G (2017)?
Why reinstall the firmware?
Errors constantly appear in the Android OS.
Some installed applications stop opening.
Some programs from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone is slow.
You are not satisfied with the possibilities of the stock firmware.
Where can I find the firmware?
On the official website of the phone manufacturer.
On specialized resources where users post 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 your SD card into your phone. It must have enough memory to fit 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. Place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App from the Play Store on your phone.
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.
On the next screen, select 'TWRP FLASH' and give the application 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. Select the file downloaded in the previous step.
Press the 'FLASH TO RECOVERY' button and confirm your choice.
After the burn process is complete, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete..
Copy the required 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 'Reboot' 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. This will delete all user data from the device, but avoid a wide range of software errors and other problems.
You can start flashing. Click 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 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 corrupted 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.
After the firmware installation procedure is completed, the 'Successful' message appears on the screen.
Summary: Type: Smartphone; Smart Phone OS: Android; OS ver: Android 5.1; SIM: Micro SIM, Dual SIM; CPU: Quad-Core; Processor Speed: 1.3 GHz; Storage: 8GB; RAM: 1GB; External Storage: microSD up to 128 GB; Battery: Removable 2050 mAhTalk Time (3G WCDMA): Up to 12 hoursVideo Playback Time: Up to 14 hoursAudio Playback Time: Up to 39 hoursInternet Usage Time(3G): Up To 9 hoursInternet Usage Time(LTE): Up to 10 hoursInternet Usage Time(Wi-Fi): Up to 11 hours; Screen Size: 4.5 inches; Resolution: 800 x 480; Main Camera: 5 MP; Front Camera: 2 MP; Features: WiFi , GPS , Bluetooth , Flash; Dimensions: 132.6 x 69.3 x 8.9 mm; Weight: 131 g; ...
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