Flash firmware on Polytron W7450
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How to flash Polytron W7450?
Why reinstall the firmware?
Errors begin to appear in the Android OS.
Some applications stop opening.
Some applications from the Play Market do not start.
The phone turns off for no apparent reason.
The phone is slow.
You are not satisfied with the functionality of the stock firmware.
Where can I find the firmware?
On the official website of the manufacturer.
On sites where users post custom or official OS.
What should be done before installing the firmware?
Back up your contacts and user data and transfer it to your computer.
Insert an SD card into your phone to write the firmware to it.
Remember your smartphone model.
Fully charge your device's battery.
Find and download the archive with Firmware. And place it on the SD card.
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, the 'Select Device' drop-down list is available, in which you need to find and select the device model for installing the recovery.
After selecting the phone, the application will redirect the user to a web page to download the modified recovery environment image file. Download the proposed *.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.
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 firmware and other necessary files to the SD card.
Insert a SD memory card into the phone.
To reboot in recovery, it is convenient 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. We open the menu, select the 'Reboot' item, and then tap on the 'REBOOT RECOVERY' button. The phone will reboot into the recovery environment automatically.
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.
Everything is ready to start flashing. Press the 'Install' button.
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 the files were copied.
Find the file we need 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 phone's memory will begin, this is accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.
The completion of the installation procedure is indicated by the inscription 'Successful'.
Summary: Aliases: Polytron Wizard Quadra W7450; Type: Mobile; Battery: Li-Ion 2100 mAh; CPU: ARM Cortex A7, Quad Core 1.2GHz, MediaTek MTK6589, PowerVR SGX 544MP; Smart Phone OS: Android 4.1.2; Dimensions: 136.5 x 67 x 9.6 mm; Formfactor: Bar; Keyboard: Screen; Sidekeys: Volume; Softkeys: 3; Weight: 137 g; Color: Yes; Colors: 16M; Other: Capacitive Touchscreen, Multitouch, Gorilla Glass; Pixel aspect ratio: 1.50; Resolution: 540x960; Display PPI: 245; Screen Size: 4.5; Type: IPS TFT; Audio: MP3, WAV, eAAC+, WMA; Camera: 8MP, 3264x2448; Other: AutoFocus, FlashLight, Video Recording; Secondcamera: 1.3MP, 1280x1024; Videocapture: Yes; Videoplayback: MP4, H.263, H.264, WMV; C ...
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