Connect the phone to the PC via USB while it is powered off. (Some models may require holding a specific button, like the Volume key, while connecting).

: The specific stock ROM for this model, such as Fly_E185_RU_V08_FMTK.zip .

Extract the firmware and the Flash Tool into separate folders.

Open the Flash Tool and load the (found inside the firmware folder). Initiate Flashing : Turn off the completely. In the Flash Tool, click Download or Flash .