Flash firmware on Douzo Knight D51
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How to flash Douzo Knight D51?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some installed applications do not open.
Many applications from the Play Market do not start.
The phone turns off for no apparent reason.
The phone began to slow down a lot.
You have decided to try a different version of Android.
Where can I find the firmware?
On the official Internet resource of the phone manufacturer.
On specialized services on which various developers lay out 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 your SD card into your phone. An SD card is needed to write firmware to it.
Find out the exact model of your smartphone.
Fully charge your phone battery.
Download 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 need to give consent to future manipulations, as well as to give consent to granting the application Superuser rights and click the 'OK' button.
After moving to the next screen, select the 'TWRP FLASH' item 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 a device, the application will direct the user to a web page to download the appropriate modified recovery environment image file. Download the suggested *.img file.
When the file is loaded, you need to return 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, press 'OK'.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Transfer the firmware and other necessary files to the SD card.
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 errors in the software, as well as other problems. Press 'WIPE' on the home screen.
Press the 'Install' button to start the flashing.
The file selection screen appears. At the very top there is a 'Storage' button for selecting an SD card.
Select the storage to which the files were copied. Press the OK button.
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 flashing the phone 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: Performance: Quad core; Display: 5.0" (12.7 cm); Storage: 8 GB; Camera: 8 MP; Battery: 2600 mAh; RAM: 1 GB; Sensors: Accelerometer; Operating system: Android v5.1 (Lollipop); Sim slots: Dual SIM, GSM GSM; Network: 4G: Not Available, 3G: Available, 2G: Available; Loudspeaker: Yes; Audio jack: 3.5 mm; Processor: Quad core, 1.3 GHz; RAM: 1 GB; Colours: Black; Display type: TFT; Pixel density: 196 ppi; Screen size: 5.0 inches (12.7 cm); Screen resolution: 480 x 854 pixels; Touch screen: Yes Capacitive Touchscreen, Multi-touch; Internal memory: 8 GB; Expandable memory: Yes Up to 32 GB; Camera features: Digital Zoom, Auto Flash; Image resolution: 3264 x 2448 Pixels; Auto ...
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