Flash firmware on BLU G40
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How to flash BLU G40?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Apps won't open.
Some programs from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone started to work slowly.
You are not satisfied with the functionality of the stock (official) firmware.
Where can I find the firmware?
On the website of your phone manufacturer.
On sites where third-party developers and phone manufacturers post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data, contacts and photos and transfer it to your computer.
Insert SD card. An SD card is needed to write firmware to it.
Determine your smartphone model.
Fully charge your device. If the battery runs out during the firmware, the device will no longer turn on.
Find and download the archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Download and install the Official TWRP App from the Play Market.
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, you need to select the 'TWRP FLASH' item 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 the phone, the program will redirect the user to a web page to download the corresponding image file of the modified recovery environment. Download the proposed *.img file.
After downloading the image file, go to the main screen of the Official TWRP App and press the 'Select a file to flash' button. Then we tell the program the path where the file loaded in the previous step is located.
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.
Copy the firmware and other necessary files to the SD card.
Insert a memory card into your 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 many problems. press 'WIPE' on the home screen.
Now you can start flashing. Press the 'Install' button.
On the file selection screen, at the very top there is a 'Storage' button for selecting an SD card.
Select the location where the files were copied. Press the OK button.
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, 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 11 (Go Edition); CPU: Quad-core (1x2.0 GHz Cortex-A75 & 3x1.8 GHz Cortex-A55); Chipset: UNISOC Tiger T310 (12 nm); GPU: PowerVR GE8300; Size: 6.0 inches, (75.2% screen-to-body ratio); Display Type: IPS LCD touchscreen / 16M colors; Resolution: 720 x 1440 pixels, 18:9 ratio (269 ppi density); RAM ROM: 3GB 32GB; Card Slot: Yes, up to 128GB via microSD card; Camera Sensor(s): Main: 13 MP, PDAF Depth: QVGA AI lens; Camera Type: Double Lenses; Camera Features: Autofocus / HDR / LED flash; Video Resolution: 1080p@30fps; Camera Sensor(s): 8-megapixel front camera; Camera Type: Single Lens; Camera Features: FaceID / AI Beauty; Video Resolution: 1080p@30fps; A ...
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