Flash firmware on Smartisan U2 Pro 32GB
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How to flash Smartisan U2 Pro 32GB?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some applications will not open.
Some applications 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 official website of the manufacturer.
On certain sites where developers 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.
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.
Find and download the archive with Firmware. And place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App from the Play Store on your phone.
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 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, return 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.
When the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure is now complete.
Transfer the necessary files to the SD card. Using a PC or laptop card reader.
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.
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 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 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: OS: Android 7.1.1 Nougat; Processor: Qualcomm Snapdragon 625 8953; Processor clock: 2.00 GHz; Number of cores: 8; GPU: Adreno 506; RAM: 4 GB; Internal memory: 32 GB; Interface: Smartisan OS 3.7; Memory cards: yes; microSD, microSDHC, microSDXC; Display: Color / TFT; 16M colors; 1080 x 1920 px (5.50") 401 ppi; 73.3% screen-to-body ratio; Display protection: Corning Gorilla Glass 3; Photo matrix: 13 Mpx; Flash: yes LED; Digital zoom: yes; Video formats: H.263, H.264, MPEG4 - 30 fps; Video resolution: 3840x2160; Additional: AF, f/2.0; Photo matrix: 8 Mpx; Flash: yes; Digital zoom: yes; Video resolution: 1280x720; Additional: FF, f/2.0; A-GPS: yes; GPS module: yes; Bluetooth: yes v4.2; EDGE: ye ...
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