Errors begin to appear in the Android operating system.
Some applications do not open, reinstalling which does not lead to a positive result.
Many programs from the Play Market do not work.
The phone restarts or shuts down by itself.
The phone began to work slowly.
You are not satisfied with the functionality of the stock firmware.
Where can I find the firmware?
On the official website of the phone manufacturer.
On sites where developers 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 your SD card into your phone. It must have enough memory to fit the firmware.
Find out the exact model of your smartphone.
Fully charge your phone battery.
Download archive with Firmware. 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 agree to install a new firmware and all the risks associated with this, as well as agree to grant the application Superuser rights and click the 'OK' button.
On the next screen, select 'TWRP FLASH' and give the application 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 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. Select the file downloaded in the previous step.
Now press the 'FLASH TO RECOVERY' button and confirm your choice, press 'OK'.
When the message 'Flash Completed Succsessfuly!' appears on the screen. Click the 'OK' button. The TWRP installation procedure is now complete.
Write the firmware to the SD card. Using a PC or laptop card reader.
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, it is recommended to clear the 'Cache' and 'Data' sections. This will delete all user data from the device, but avoid a wide range of software errors and other problems. You must press 'WIPE' on the main screen.
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. Press the 'OK' button.
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, accompanied by logging and filling in the progress bar.
The completion of the installation procedure is indicated by the inscription 'Successful'.
Summary: Operating System: Android v4 (Ice Cream Sandwich); SIM Slot(s): Single SIM; Dimensions: 245 (H) x 192 (W) x 12.50 (T) mm; Weight: 650 grams; Colours: Black with Grey; Screen Size: 9.7 inches; Screen Resolution: 1024 x 768 pixels; Pixel Density: 132 ppi; Display Type: IPS LCD; Touch Screen: Capacitive Touchscreen; Chipset: Nvidia Tegra 2; Processor: Dual core, 1 GHz; RAM: 1 GB; Internal Memory: 4 GB; Expandable Memory: Up to 32 GB; Talktime: Up to 6(2G); Wi-Fi: Wi-Fi 802.11, b/g/n; Bluetooth: Yes; HDMI: Yes; Other Sensors: Accelerometer; ...
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