Some G540 variants work with flashrom , a powerful open-source flashing utility. However, device support is limited compared to the official software.
Over 6,500+ ICs, including SPI Flash, EPROMs, and Microcontrollers (MCS-51, AVR, PIC). genius g540 programmer software download link
Always scan any downloaded file with Windows Defender or VirusTotal. The following sources are recommended by the electronics repair community. Some G540 variants work with flashrom , a
Useful if you only need the specific Windows drivers for various operating systems. Some G540 variants work with flashrom