Flash firmware on Koolnee K1 Trio
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How to flash Koolnee K1 Trio?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some applications do not open, reinstalling which does not lead to a positive result.
Some programs from the Play Market do not start.
The phone restarts or shuts down randomly.
The phone slows down a lot during operation.
You have decided to try a different version of Android.
Where can I find the firmware?
On the official website of the phone manufacturer.
On specialized resources where users post custom or official OS.
What should be done before installing the firmware?
Create a backup copy of user data, contacts and photos and transfer it to your computer.
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 phone battery.
Find and download the archive with Firmware. Place it on the SD card.
Installing TWRP Recovery
Install the Official TWRP App from the Play Store on your phone.
At the first start, you need to give consent to future manipulations, as well as consent to granting the Superuser rights to the application. Check the checkboxes and press the 'OK' button.
On the next screen, select 'TWRP FLASH' 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 phone, the application will direct the user to a web page to download the modified recovery environment image file. Download the proposed *.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. Select the file downloaded in the previous step.
Press the 'FLASH TO RECOVERY' button and confirm your choice.
The recording process is very fast, and upon completion, the message 'Flash Completed Succsessfuly!' appears. Click 'OK'. The TWRP installation procedure can be considered complete.
Copy the required files to the SD card. Using a PC or laptop card reader, it will be much faster.
Insert a memory card into your 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. This will delete all user data from the device, but avoid a wide range of 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, 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, you need to check the item 'Zip signature verification', which will avoid using corrupted files when writing to the phone's memory sections.
The procedure for writing files to the device's memory will begin, accompanied by the appearance of inscriptions in the log field and the completion of the progress bar.
After completing the installation procedure, a 'Successful' message appears on the screen.
Summary: Brand: KOOLNEE; Smart Phone OS: Android 7.1; Service Provider: Unlocked; SIM Card Slot: Dual SIM,Dual Standby; SIM Card Type: Dual Nano SIM; Type: 4G Phablet; Cores: 2.0GHz,Octa Core; CPU: MTK6763; External Memory: TF card up to 32GB (not included); GPU: Mali-T860 MP2; RAM: 6GB; ROM: 128GB; Screen resolution: 2160 x 1080; Screen size: 6.01 inch; Screen type: Capacitive; Back-camera: 16.0MP + 2.0MP; Camera type: Triple cameras; Flashlight: Yes; Front camera: 8.0MP; Video recording: Yes; Music format: AAC,AMR-NB,AMR-WB,FLAC,MP3,OGG,WAV,WMA; Video format: 3GP,ASF,AVI,FLV,MKV,MOV,MP4,RM,RMVB,WMV; Additional Features: 3G,4G,Alarm,Bluetooth,Browser,Calculator,Calendar,Camera, ...
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