Flash firmware on Cubot X18 Plus
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How to flash Cubot X18 Plus?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some applications do not open, reinstalling which does not lead to a positive result.
Many programs from the Play Market do not work.
The phone restarts or shuts down by itself.
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 website 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 all personal information: contacts, photos and transfer it to another 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 battery.
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.
On the next screen, select 'TWRP FLASH' and give the application root rights.
On the main screen of the application, click on the 'Select Device' drop-down list, and select your phone model.
After selecting a phone, the application will direct 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.
Now 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.
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 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
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.
The file selection screen is displayed. 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, you need to check the item 'Zip signature verification', which will avoid using damaged files during recording.
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: Brand: CUBOT; Smart Phone OS: Android 8.0; Service Provider: Unlocked; SIM Card Slot: Dual SIM,Dual Standby; SIM Card Type: Nano SIM Card; Type: 4G Phablet; Cores: 1.5GHz,Octa Core; CPU: MTK6750T; External Memory: TF card up to 256GB; RAM: 4GB RAM; ROM: 64GB; Pixels Per Inch (PPI): 403; Screen resolution: 2160 x 1080; Screen size: 5.99 inch; Screen type: IPS; Back camera: with flash light and AF; Back-camera: 0.3MP + 16.0MP（SW 20.0MP ); Camera type: Triple cameras; Front camera: 8.0MP ( SW 13.0MP ); Video recording: Yes; E-book format: PDF,TXT; Music format: 3GP,ACC,AMR,FLAC,M4A,Midi,MP3,MP4,OGG,WAV; Picture format: BMP,GIF,JPEG,PNG; Video format: 3GP,AVI,F4V,FLV,H.2 ...
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