Flash firmware on ZTE Blade L7
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How to flash ZTE Blade L7?
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 shuts down and restarts for no apparent 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 website of your phone manufacturer.
On sites where third-party developers post custom operating systems.
What should be done before installing the firmware?
Back up your contacts and user data and transfer it to another medium.
Insert your SD card into your phone. It must have enough memory to fit the firmware.
Find out the exact model of your smartphone.
Fully charge your device. If the battery runs out during the firmware, the device will no longer turn on.
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 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, 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 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.
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.
After adding the image file to the program, click the 'FLASH TO RECOVERY' button and confirm your choice, click 'OK'.
When the message 'Flash Completed Succsessfuly!' appears on the screen. Click the 'OK' button. 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 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, it is recommended to clear the 'Cache' and 'Data' sections. This will delete all user data from the device, but avoid a wide range of software errors and other problems. You must press 'WIPE' on the main screen.
Press the 'Install' button to start the flashing.
On the file selection screen, at the very top there is a 'Storage' button for selecting an SD card.
Select the storage to which the files were copied.
Find the file we need 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 writing files to the phone's memory will begin, accompanied by logging and filling in the progress bar.
After completing the installation procedure, a 'Successful' message appears on the screen.
Summary: Size: 72.2 mm x 144.0 mm x 8.8 mm; Aspect Ratio: 16: 9; Weight: 159 g; Usable surface: 66 %; Materials: Plastic; Colors: Black White; Origami: Print 3D Model; Diagonal: 5"; Screen Type: LCD TFT; Screen Resolution: 480 x 854 px (LowRes); Density: Low Density, 196 Pixels per inch differentiable less than 60 cm away; Others: , Capacitive, Multi-touch; Operating System: Android 7.0 Nougat; Model: Spreadtrum SC7731G; CPU: ARM Cortex-A7; Type: Quad-Core; Frequency: 1.3 GHz; 64 Bits: No; GPU: ARM Mali-400 MP2; RAM: 1 GB; Antutu score: 16.500 (Antutu v6) Overall performance better than 10% of devices; Capacity: 8 GB (Capacity with the OS (depends on the brand and ROM version): ...
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