When the phone won't turn on at all (Black Screen) but is still detected by a computer. Prerequisites Before Flashing
Flashing firmware is a technical procedure. Follow each step carefully to avoid issues. Before you begin, ensure you have a Windows PC and a reliable USB cable.
Launch the application by executing the UpgradeDownload.exe or ResearchDownload.exe file.
Remember: Triple-check your processor type before flashing, and when in doubt, consult a professional repair technician.
