Flash firmware on Sharp AU KDDI SHF31 Aquos K
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How to flash Sharp AU KDDI SHF31 Aquos K?
Why reinstall the firmware?
Errors begin to appear in the Android operating system.
Some applications stop opening.
Many programs from the Play Market do not work.
The phone restarts or shuts down randomly.
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 manufacturer.
On sites where developers 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 SD card. An SD card is needed to write firmware to it.
Find out the exact model of your smartphone.
Fully charge your device's battery.
Download archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Download and install the Official TWRP App from the Play Market.
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.
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, 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 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 memory card into your 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 delete all user data from the phone, this will avoid many problems. press 'WIPE' on the home 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.
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, 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: OS version: Android 4.4; CPU: Qualcomm Snapdragon 400 MSM8926, 1200 MHz; Processor cores number: 4; RAM: 1 GB; Built-in memory: 8 GB; Video processor: Adreno 305; Memory card slot: yes, volume of up to 32 GB; SIM-card amount: 1; SIM-card type: nano SIM; Case type: clamshell; Case material: plastic; Construction: waterproof; Height: 113 mm; Width: 51 mm; Thickness: 16.9 mm; Weight: 128 grams; Diagonal: 3.4"; Screen type: colored TFT, 16.78 mln colors; Screen size: 960x540; Additional screen: yes, 36x128 px; Camera: 13.1 megapixels; Camera functions: autofocus; Video Recording: yes; Video resolution max: 1920x1080; Standard: GSM 900/1800/1900, 3G, 4G LTE; Interfaces: Wi-Fi 802.11ac, Bluetooth ...
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