Flash firmware on Sharp AU KDDI SHL25 Aquos Serie
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How to flash Sharp AU KDDI SHL25 Aquos Serie?
Why reinstall the firmware?
Errors constantly appear in the Android OS.
Some installed applications stop opening.
Many applications from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone started to work slowly.
You are not satisfied with the possibilities of the stock firmware.
Where can I find the firmware?
On the official website of the 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 SD card. An SD card is needed to write firmware to it.
Determine your smartphone model.
Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.
Download archive with Firmware.
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 the firmware, 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, click 'Select Device', and select your phone model.
After selecting a device, the program redirects the user to a web page to download the corresponding image file of the modified recovery environment. Download the suggested *.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, press 'OK'.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now 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 enter the menu accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. Select 'Reboot' 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 many problems. press 'WIPE' on the home screen.
You can start flashing. Click the 'Install' button.
The file selection screen appears. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the location where you copied the files.
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.
After the firmware installation procedure is completed, the 'Successful' message appears on the screen.
Summary: OS version: Android 4.4; CPU: Qualcomm Snapdragon 800 MSM8974, 2300 MHz; Processor cores number: 4; RAM: 2 GB; Built-in memory: 32 GB; Video processor: Adreno 330; Memory card slot: yes, volume of up to 128 GB; SIM-card amount: 1; Case type: classic; Construction: waterproof; Height: 134 mm; Width: 71 mm; Thickness: 9.9 mm; Weight: 141 grams; Diagonal: 5.2"; Screen type: colored TFT, 16.78 mln colors, sensor; Sensor screen type: multitouch, capacitive; Camera: 13.1 megapixels; Camera functions: autofocus; Front camera: 2.1 megapixels; Video Recording: yes; Video resolution max: 3840x2160; Standard: GSM 900/1800/1900, 3G, 4G LTE, LTE-A Cat. 4; Interfaces: Wi-Fi 802.11ac, Bluetooth 4.0, USB, ...
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