Flash firmware on Karbonn Alfa A91 Champ
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How to flash Karbonn Alfa A91 Champ?
Why reinstall the firmware?
Errors periodically appear in the Android operating system.
Some installed applications do not open.
Many applications from the Play Market do not start.
The phone restarts by itself for no reason.
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 your phone manufacturer.
On Internet resources 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 the gadget. It must have enough memory for 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.
Installing TWRP Recovery
Install the Official TWRP App via the Play Market. And run this application.
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.
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.
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.
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 necessary files to the SD memory card. Using a PC or laptop card reader.
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, 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 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 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: Smart Phone OS: Android; OS ver: Android 5.1 Lolipop; SIM: Dual SIM; CPU: Quad Core; Processor Speed: 1.2 GHz; Storage: 4GB; RAM: 0.5GB; External Storage: Supports up to 32GB expandable memory; Battery: 1400 mAh Li-ion Battery; Screen Size: 4 inches; Resolution: 800 x 480 pixels; Main Camera: 2 MP; Front Camera: 0.3 MP; Features: WiFi , Hotspot/Tethering , Bluetooth , Flash; Dimensions: Height 127 mm × Width 64.4 mm × Thickness 10.6 mm; ...
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