: Open FactoryTool.exe and click the Firmware button to select your .img file.
If you tell me your and what you want to do (e.g., remove FRP, flash firmware, unlock pattern), I can give you safer, step-by-step instructions in simple English or point you to an official tool guide. factory tool v139 tieng viet top
For Vietnamese users, the process typically involves a few critical steps to ensure the device is not permanently damaged: : Open FactoryTool