Flash firmware on JiaYu JY-G3
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How to flash JiaYu JY-G3?
Why reinstall the firmware?
Errors begin to appear in the Android OS.
Some applications stop opening.
Many programs from the Play Market do not start.
The phone restarts or shuts down by itself.
The phone is slow.
You are not satisfied with the functionality of the stock firmware.
Where can I find the firmware?
On the official Internet resource of the phone manufacturer.
On specialized services on which developers lay out 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.
Remember your smartphone model.
Charge your phone fully.
Download the archive with Firmware and 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 consent to future manipulations, as well as consent to granting the application Superuser rights. Check the checkboxes and press 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, 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.
When the file is loaded, 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'.
After the burn process is complete, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete..
Write the firmware and other necessary files to the SD card. Using a PC or laptop card reader, it will be much faster.
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, you need to clear the 'Cache' and 'Data' sections, press 'WIPE' on the main screen. This will delete all user data from the device, but avoid a wide range of software errors and other problems.
Everything is ready to start flashing. Press 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. 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 device's memory will begin, accompanied by the appearance of inscriptions in the log field and the completion of the progress bar.
The completion of the installation procedure is indicated by the inscription 'Successful'.
Summary: Type: Mobile; Battery: Li-ion 2750 mAh; CPU: ARM Cortex A9, 1.0GHz; Smart Phone OS: Android 4.0.4; Dimensions: 135 x 65 x 10.8 mm; Formfactor: Bar; Keyboard: Screen; Sidekeys: Volume; Softkeys: 3; Weight: 135 g; Color: Yes; Colors: 16M; Other: Capacitive Multi Touch Screen; Pixel aspect ratio: 2.00; Resolution: 720x1280; Display PPI: 326; Screen Size: 4.5; Type: IPS; Audio: AAC, AAC+, AMR, AMR-NB, iMelody, MID, MIDI, MP3, MPEG3, MPEG, MPG, WAV, WMA; Camera: 8MP; Other: GIF, JPEG, JPG, PNG, BMP, Auto Focus, Geotagging; Secondcamera: 2MP; Videoplayback: MPEG4, MP4, 3GPP, H264, H263, WMV; Connectors: 3.5mm Audio, MicroUSB 2.0; Network: GSM850, GSM900, GSM1800, GSM190 ...
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