Flash firmware on Symphony P9
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How to flash Symphony P9?
Why reinstall the firmware?
Errors constantly appear in the Android OS.
Some applications stop opening.
Many programs from the Play Market do not work.
The phone restarts by itself for no reason.
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 Internet resource 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 user data and transfer it to your computer.
Insert SD card. An SD card is needed to write firmware to it.
Determine your smartphone model.
Charge your phone fully.
Download archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App from the Play Store on your phone. And run this application.
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.
After moving to the next screen, select the 'TWRP FLASH' item and provide the application with root rights.
On the main screen of the application, click 'Select Device', and select your phone model.
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.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. 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 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 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, 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 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: Android 7.0 Nougat; CPU: ARM Cortex-A53; CPU frequency: 1300.0 MHz (8-core); Chipset: MediaTek MT6753; GPU: ARM Mali-T720 MP3; RAM Memory: 3 GB; Display: LCD IPS Color (16M), 1080x1920 px (5.5") 401ppi; Touch screen: yes; Built-in memory: 32 GB; Memory card: microSDXC; Camera: 12.98 MPx; Resolution: 4160 x 3120 px; Flash: Dual LED; Autofocus: yes; Diaphragm: f/2.0; Optical zoom: no; Digital zoom: yes; Second camera: 12.98 Mpx; Resolution: 4160 x 3120 px; Bluetooth: 4.0; EDGE: yes; GPRS: yes; GPS: yes; A-GPS: yes; LTE: LTE-FDD: 850, 1800; GSM: 900 1800; HSDPA: 2100 HSPA; USB: 2.0; WAP: 2.0; Wi-Fi: 802.11 b/g/n; Audio formats: AAC, AAC , MIDI, MP3, WMA, WAV, AMR, FLAC, OGG; Audio out: Jac ...
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