Flash firmware on Celkon Diamond 4G Tab 7
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How to flash Celkon Diamond 4G Tab 7?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some applications do not open, reinstalling which does not lead to a positive result.
Many applications from the Play Market do not start.
The phone restarts for no reason.
The phone slows down a lot during operation.
You are not satisfied with the functionality of the stock (official) firmware.
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?
Back up your phone's user data.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Determine your smartphone model.
Fully charge your device.
Download archive with Firmware.
Installing TWRP Recovery
Download the Official TWRP App from the Play Market. And install it.
At the first start, you need to give consent to future manipulations, as well as consent to granting the Superuser rights to the application. Check the checkboxes and press 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 a phone, the application will direct the user to a web page to download the modified recovery environment image file. 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.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
The recording process is very fast, and upon completion, 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 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. This will delete all user data from the device, but avoid a wide range of 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, as well as the item 'Zip signature verification'. This item should be checked by placing a cross in the check-box, which will avoid using damaged 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 completing the installation procedure, a 'Successful' message appears on the screen.
Summary: Operating System: Android v5.1 (Lollipop); SIM Slot(s): Dual SIM, GSM+GSM; Network: 4G: Available (supports Indian bands), 3G: Available, 2G: Available; Dimensions: 127 (H) x 48 (W) x 13.7 (T) mm; Weight: 270 grams; Colours: Black; Screen Size: 7.0 inches; Screen Resolution: 600 x 1024 pixels; Pixel Density: 170 ppi; Display Type: IPS LCD; Touch Screen: Capacitive Touchscreen; Screen to Body Ratio: 226.96 %; Chipset: MediaTek MT6735; Processor: Quad core, 1.3 GHz, Cortex A53; Architecture: 64 bit; Graphics: Mali-T720 MP2; RAM: 1 GB; Internal Memory: 8 GB; Expandable Memory: Up to 32 GB; Resolution: 3.2 MP; Flash: LED Flash; Image Resolution: 2048 ...
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