Flash firmware on Videocon Delite 21
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How to flash Videocon Delite 21?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Apps won't open.
Many applications from the Play Market do not start.
The phone restarts or shuts down randomly.
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 website of your phone manufacturer.
On Internet 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 an SD card into your phone to write the firmware to it.
Find out the exact model of your smartphone.
Fully charge your device. If the battery runs out during the firmware, the device will no longer turn on.
Download archive with Firmware.
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 need to give consent to future manipulations, as well as to give consent to granting the application Superuser rights and click the 'OK' button.
On the next screen, you need to select the 'TWRP FLASH' item and give the application 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.
Press the 'FLASH TO RECOVERY' button and confirm your choice.
When 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 memory card into your 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.
Press the 'Install' button to start the flashing.
On the file selection screen, at the very top there is a 'Storage' button for selecting an SD card.
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 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: Performance: Quad core; Display: 5.0" (12.7 cm); Storage: 8 GB; Camera: 8 MP; Battery: 3000 mAh; RAM: 1 GB; Sensors: Accelerometer; Operating system: Android v6.0 (Marshmallow); Sim slots: Dual SIM, GSM GSM; Network: 4G: Available 3G: Available, 2G: Available; Loudspeaker: Yes; Fm radio: Yes; Audio jack: 3.5 mm; Chipset: MediaTek MT6735M; Graphics: Mali-T720 MP2; Processor: Quad core, 1 GHz, Cortex A53; RAM: 1 GB; Thickness: 10 mm; Width: 74 mm; Height: 146 mm; Colours: Humble Gold, Space Grey, Rose Gold; Display type: IPS LCD; Screen to body ratio: 63.64 %; Pixel density: 196 ppi; Screen size: 5.0 inches (12.7 cm); Screen resolution: 480 x 854 pixels; Touch scr ...
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