Flash firmware on Lenovo A789
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How to flash Lenovo A789?
Why reinstall the firmware?
Errors constantly appear in the Android operating system.
Some applications stop opening.
Many applications from the Play Market do not start.
The phone restarts for no reason.
The phone began to slow down a lot.
You are not satisfied with the functionality of the stock (official) firmware.
Where can I find the firmware?
On the official Internet resource of the phone manufacturer.
On Internet resources where users post custom or official OS.
What should be done before installing the firmware?
Back up your phone's user data.
Insert your SD card into your phone. An SD card is needed to write firmware to it.
Determine your smartphone model.
Charge your phone fully.
Download 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 need to give consent to future manipulations, as well as to give consent to granting 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 the phone, the application will redirect the user to a web page to download the modified recovery environment image file. 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.
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 can be considered complete.
Copy the necessary files to the SD 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 delete all user data from the phone, this will avoid errors in the software, as well as other problems. Press 'WIPE' on the home screen.
Now you can start flashing. Press the 'Install' button.
The file selection screen appears. At the very top is the 'Storage' button, select the location where the firmware file is located.
Select the location where you copied the files.
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, 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: Smart Phone OS: Android OS, v4.0.4 (Ice Cream Sandwich); Chipset: Mediatek MT6577; CPU: Dual-core 1.0 GHz Cortex-A9; GPU: PowerVR SGX531u; Type: TFT capacitive touchscreen, 16M colors; Screen Size: 4.0 inches (~55.0% screen-to-body ratio); Resolution: 480 x 800 pixels (~233 ppi pixel density); Multitouch: Yes, up to 5 fingers; Main Camera: 5 MP, autofocus; Features: Geo-tagging; Video: 720p; Front Camera: VGA; Card slot: microSD, up to 32 GB (dedicated slot); Internal: 4 GB, 512 MB RAM; Alert types: Vibration; MP3, WAV ringtones; Loudspeaker: Yes; 3.5mm jack: Yes; WLAN: Wi-Fi 802.11 b/g/n, hotspot; Bluetooth: Yes; GPS: Yes, with A-GPS; Radio: FM radio, FM transmitter; ...
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