Most ECUs require a hardware trigger:
Understanding WinFlasher 3.12.1: A Quick Guide WinFlasher 3.12.1.exe WinFlasher 3.12.1.exe
WinFlasher is a lightweight utility designed to flash system images (BIOS, UEFI, or OS partitions) onto embedded devices and tablets. This tool provides a command-line interface (CLI) for automated bulk deployments and a simple GUI for individual updates. WinFlasher 3.12.1.exe