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Flash firmware on Panasonic P85

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How to flash Panasonic P85?


Why reinstall the firmware?

Errors periodically appear in the Android operating system.

Some installed applications do not open.

Many programs from the Play Market do not start.

The phone restarts for no reason.

The phone started to work slowly.

You have decided to try a different version of Android.





Where can I find the firmware?

On the official Internet resource of the phone manufacturer.

On specialized services 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. An SD card is needed to write firmware to it.

Find out the exact model of your smartphone.

Fully charge your phone battery.

Find and download the archive with Firmware.





Installing TWRP Recovery

Download the Official TWRP App from the Play Market. And install it.

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.

TWRP

On the main screen of the application, click on the 'Select Device' drop-down list, and select your phone model.

After selecting a device, the application will direct the user to a web page to download the appropriate modified recovery environment image file. Download the suggested *.img file.

When the file is loaded, you need to 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.

Copy the required files to the 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

TWRP

Before flashing, you need to delete all user data from the phone, this will avoid errors in the software, as well as other problems. Press 'WIPE' on the home screen.

Press the 'Install' button to start the flashing.


TWRP

The file selection screen appears. At the very top there is a 'Storage' button for selecting an SD card.

Select the storage to which the files were copied.



TWRP

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, this is accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.

After completing the installation procedure, a 'Successful' message appears on the screen.





Summary: Operating System: Android v6.0 (Marshmallow); SIM Slot(s): Dual SIM, GSM GSM; SIM Size: SIM1: Micro, SIM2: Nano; Network: 4G: Available, 3G: Available, 2G: Available; Fingerprint Sensor: No; Quick Charging: No; Height: 145 mm; Width: 72.2 mm; Thickness: 9.3 mm; Weight: 146.7 grams; Colours: Gold, Grey; Screen Size: 5.0 inches (12.7 cm); Screen Resolution: HD (720 x 1280 pixels); Pixel Density: 294 ppi; Display Type: IPS LCD; Touch Screen: Yes Capacitive Touchscreen, Multi-touch; Screen to Body Ratio: 65.68 %; Chipset: MediaTek MT6735P; Processor: Quad core, 1 GHz, Cortex A53; Architecture: 64 bit; Graphics: Mali-T720 MP2; RAM: 2 GB; Internal Memory: 16 GB; Expanda ...

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