Flash firmware on Alcatel U5
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How to flash Alcatel U5?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some installed applications do not open.
Many programs from the Play Market do not work.
The phone restarts by itself for no reason.
The phone began to work slowly.
You have decided to try a different version of Android.
Where can I find the firmware?
On the official Internet resource 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 user data and transfer it to your computer.
Insert SD card. 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
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 a new firmware and all the risks associated with this, as well as agree to grant the application Superuser rights and click the 'OK' button.
After moving to the next screen, select the 'TWRP FLASH' item 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 a device, the application will direct the user to a web page to download the appropriate modified recovery environment image file. Download the suggested *.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.
Click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK' in the question window.
When the message 'Flash Completed Succsessfuly!' appears on the screen. Click the 'OK' button. 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 many problems. press 'WIPE' on the home screen.
Press the 'Install' button to start the flashing.
The file selection screen appears. 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.
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.
After completing the installation procedure, a 'Successful' message appears on the screen.
Summary: Performance: Quad core; Display: 5.0" (12.7 cm); Storage: 8 GB; Camera: 5 MP; Battery: 2050 mAh; RAM: 1 GB; Sensors: Accelerometer; Operating system: Android v6.0 (Marshmallow); Sim slots: Single SIM, GSM; Network: 4G: Available 3G: Available, 2G: Available; Loudspeaker: Yes; Fm radio: Yes; Audio jack: 3.5 mm; Chipset: MediaTek MT6737; Graphics: Mali-T720 MP2; Processor: Quad core, 1.1 GHz, Cortex A53; RAM: 1 GB; Thickness: 9.9 mm; Width: 71.8 mm; Height: 140.7 mm; Colours: Black, White; Display type: TFT; Screen to body ratio: 68.06 %; Pixel density: 196 ppi; Screen size: 5.0 inches (12.7 cm); Screen resolution: 480 x 854 pixels; Touch screen: Yes Capacitive Tou ...
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