Flash firmware on Lava Z90
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How to flash Lava Z90?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some applications will not open.
Many programs from the Play Market do not start.
The phone restarts for no reason.
The phone is slow.
You have decided to try a different version of Android.
Where can I find the firmware?
On the official website of the manufacturer.
On specialized services where users post custom or official OS.
What should be done before installing the firmware?
Back up your phone's user data.
Insert an SD card into your phone to write the firmware to it.
Find out the exact model of your smartphone.
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.
Installing TWRP Recovery
Download the Official TWRP App from the Play Market. And install it.
When you start the application for the first time, you must consent to future manipulations, as well as consent to granting the application Superuser rights. Check the checkboxes and press 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.
When the file is loaded, you need to 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.
After the burn process is complete, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete..
Copy the required files to the memory card. Using a PC or laptop card reader.
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, you need to clear the 'Cache' and 'Data' sections, press 'WIPE' on the main screen. You will delete all user data from the phone, this will avoid software errors and other problems.
Press the 'Install' button to start the flashing.
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 writing files to the phone's memory will begin, this is 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: 5.2" (13.21 cm); Storage: 32 GB; Camera: 8 MP; Battery: 2750 mAh; Ram: 3 GB; Fingerprint sensor position: Rear; Sensors: Light sensor, Proximity sensor, Accelerometer; Fingerprint sensor: Yes; Quick charging: No; Operating system: Android v7.0 (Nougat); Sim slots: Dual SIM, GSM GSM; Sim size: SIM1: Micro SIM2: Nano; Network: 4G: Available 3G: Available, 2G: Available; Fingerprint sensor: Yes; Loudspeaker: Yes; Fm radio: Yes; Audio jack: 3.5 mm; Chipset: MediaTek MT6737M; Graphics: Mali-T720 MP2; Processor: Quad core, 1.3 GHz, Cortex A53; Ram: 3 GB; Thickness: 8.0 mm; Width: 73 mm; Height: 148.5 mm; Colours: Blue, Gold; Display t ...
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