: Turn off the phone and connect it to the PC via USB while holding the volume buttons (boot key).
: Ensure the battery is at least 50% charged. Install Drivers : Run the driver installer on your PC. Load the Firmware : Open your flashing tool (e.g., SP Flash Tool ). premio s87 firmware link
Rebuilding a completely dead or unresponsive phone. : Turn off the phone and connect it
Before attempting to flash, you must have the necessary tools on your computer. premio s87 firmware link