Flash firmware on Lenovo Tab K9
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How to flash Lenovo Tab K9?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some installed applications stop opening.
Some applications from the Play Market do not start.
The phone restarts by itself for no reason.
The phone began to slow down a lot.
You have decided to try a different version of Android.
Where can I find the firmware?
On the phone manufacturer's website.
On sites where users 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 an SD card into your phone to write the firmware to it.
Find out the exact model of your smartphone.
Fully charge your phone. If the battery runs out during boot, the device will no longer turn on.
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. And run this application.
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.
Going to 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 a device, the program redirects the user to a web page to download the corresponding image file of the modified recovery environment. Download the suggested *.img file.
After downloading the image file, go 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 firmware and other necessary files to the SD card.
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 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 appears. At the very top there is a 'Storage' button for selecting an SD card.
Select the location where 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: OS: Android 14; Chipset: Mediatek Helio G85 (12 nm); CPU: Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55); GPU: Mali-G52 MC2; Type: TFT LCD, 480 nits (typ); Screen Size: 8.7 inches, 214.9 cm 2 (~81.6% screen-to-body ratio); Resolution: 800 x 1340 pixels, 5:3 ratio (~179 ppi density); Protection: Mohs level 4; Card slot: microSDXC; Internal: 64GB 4GB RAM, 128GB 4GB RAM; Single camera: 8 MP, AF; Video: 1080p; Single camera: 2 MP; Video: 720p; Loudspeaker: Yes, with stereo speakers (with Dolby Atmos); 3.5mm jack: Yes; WLAN: Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct; Bluetooth: 5.3, A2DP, LE; Positioning: GPS, GLONASS, GALILEO, BDS - cellular model only; NFC: No; Radio: FM radio; USB: USB Type-C 2.0; Colors: Luna grey, Seafoam green; Models: TB305FU; Price: About 190 EUR; S ...
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