Flash firmware on BLU V81
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How to flash BLU V81?
Why reinstall the firmware?
The operating system keeps getting errors.
Some applications will not open.
Many programs from the Play Market do not work.
The phone restarts by itself for no reason.
The phone started to work slowly.
You want to update the firmware, as it does not suit you in terms of functionality.
Where can I find the firmware?
On the official website of the manufacturer.
On sites where third-party developers post custom operating systems.
What should be done before installing the firmware?
Create a backup copy of user data and transfer it to your computer.
Insert SD card. An SD card is needed to write firmware to it.
Determine your smartphone model.
Charge your phone fully. If the battery runs out during boot, the device will no longer turn on. It will be difficult to restore it.
Download archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App from the Play Store on your phone. And run this application.
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.
In the next screen, select the item 'TWRP FLASH' and provide the application with root-rights.
On the main screen of the application, click 'Select Device', and find 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.
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.
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.
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 into recovery, you need to enter the menu accessible by pressing the button with three stripes in the upper left corner of the main screen of the application. Select the 'Reboot' item, and then click 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 many problems. press 'WIPE' on the home screen.
You can start flashing. Click the 'Install' button.
The file selection screen is displayed. At the very top is the 'Storage' button, which allows you to switch between types of memory.
Select the storage to which the files were copied.
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, accompanied by the appearance of inscriptions in the log field and the movement of the progress bar.
When the procedure for installing the firmware is completed, the message 'Successful' appears on the screen.
Summary: Operating System: Android 10; CPU: Octa-core (4x1.6 GHz Cortex-A55 CPU and 4x1.2 GHz Cortex-A55); Chipset: Spreadtrum UniSoC SC9863A; GPU: PowerVR GE8322; Size: 6.5 inches, 102.0 cm2 (~81.8% screen-to-body ratio); Display Type: IPS LCD capacitive touchscreen, 16M colors; Resolution: 720 x 1600 pixels, 20:9 ratio (~270 ppi density); RAM ROM: 3 GB; Card Slot: Yes, up to 128GB GB via microSD card (uses SIM 2 slot); Camera Sensor(s): 13 MP 0.3 MP main camera; Camera Type: Double Lenses; Camera Features: Autofocus Continuous shooting Geotagging Panorama HDR Touch focus Face detection 5-element lens; Video Resolution: 1080p@30fps; Camera Sensor(s): 8-megapixel; Camera Type: Single Lens; ...
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