Flash firmware on Good One GM15
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How to flash Good One GM15?
Why reinstall the firmware?
Errors begin to appear in the Android operating system.
Some installed applications stop opening.
Many programs from the Play Market do not work.
The phone turns off for no apparent reason.
The phone started to work slowly.
You are not satisfied with the functionality of the stock firmware.
Where can I find the firmware?
On the phone manufacturer's website.
On sites where third-party developers post custom operating systems.
What should be done before installing the firmware?
Back up your contacts and user data and transfer it to your computer.
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. If the battery runs out during boot, the device will no longer turn on.
Download archive with Firmware. 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 agree to install the firmware, as well as agree to grant the application Superuser rights and click the 'OK' button.
Going to 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 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.
When the download is finished, you need to return to the main screen of the Official TWRP App and click on 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. Click 'OK'. The TWRP installation procedure is now complete.
Transfer the necessary files to the SD memory 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 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.
Everything is ready to start flashing. Press the 'Install' button.
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.
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, this is 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: Operating System: Android v4.4.2 (Kitkat); SIM Slot(s): Dual SIM, GSM+GSM; Network: 4G: Not Available, 3G: Available, 2G: Available; Dimensions: 135 (H) x 67 (W) x 8.8 (T) mm; Colours: Black White; Screen Size: 5.0 inches; Screen Resolution: 768 x 1024 pixels; Pixel Density: 256 ppi; Display Type: Super AMOLED; Touch Screen: Capacitive Touchscreen, Multi-touch; Processor: Quad core, 1.3 GHz; RAM: 512 MB; Internal Memory: 2 GB; Expandable Memory: Up to 32 GB; User Available Storage: Up to 1.27 GB; Resolution: 5 MP; Flash: LED Flash; Image Resolution: 2592 x 1944 Pixels; Camera Features: Digital Zoom; Video Recording: 1280x720 fps; Resolution: 2 MP; ...
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