Flashing firmware is a delicate process. If done incorrectly, you can permanently brick your device. Gather these essentials first:
Ensure a steady power supply. A power failure during flash will ruin the box. t9 firmware android 10
In the AndroidTool, ensure the tab is selected. Flashing firmware is a delicate process
After installing a T9 keyboard like TT9, you need to set it as your default keyboard. t9 firmware android 10