Flash firmware on NIU Tek 3-5D2
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How to flash NIU Tek 3-5D2?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some applications will not open.
Many applications from the Play Market do not start.
The phone restarts or shuts down by itself.
The phone is slow.
You are not satisfied with the functionality of the stock (official) firmware.
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?
Create a backup copy of all personal information: contacts, photos and transfer it to another computer.
Insert an SD card into your phone to write the firmware to it.
Determine 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 to your phone from the Play Market. And install this app.
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 on the 'Select Device' drop-down list, and select 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.
Now press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
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 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 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 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, you need to check the item 'Zip signature verification', which will avoid using damaged files during recording.
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: OS: Android (4.4); Dimensions: 4.57 x 2.40 x 0.45 inches (116 x 61 x 11.5 mm); Weight: 3.46 oz (98 g)the average is 5.3 oz (152 g); Keys: Right: Volume control, Lock/Unlock key; Colors: Black, Green, Blue, Red, White; Physical size: 3.5 inches; Resolution: 320 x 480 pixels; Pixel density: 165 ppi; Technology: TFT; Screen-to-body ratio: 51.55 %; Colors: 262 144; Touchscreen: Capacitive, Multi-touch; Features: Light sensor, Proximity sensor; Camera: 2 megapixels; Flash: LED; Features: Face detection, Geo tagging; Shooting Modes: Panorama; Camcorder: Yes; Features: Video calling, Video sharing; Front-facing camera: 0.3 megapixels VGA; System chip: MediaTek MT6572M; Process ...
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