These errors mean the preloader is either corrupted, from a different firmware version, or completely absent.
When the preloader is broken, your device enters a state called . You will experience the following symptoms: The phone does not turn on or vibrate. The screen remains completely black.
Navigate to and restart.
The latest iterations of MTK repair tools (such as SP Flash Tool, MTK Client, or specialized multi-brand GSM tools) feature critical updates specifically designed to address stubborn bootloader errors.
Clone or download from trusted GitHub repositories (search: mtkclient fixed preloader ).
(matching your exact model and firmware version)
Flashing the wrong firmware version or a ROM meant for a different phone variant.