As described in my origin post, the linked file sp66781.exe consists of managing app INSYDE so during its installation just after extracting inicializes automaticly INSYDEFLASH app used for promt BIOS updates (instead of window HP BIOS Update and Recovery with option CREATE USB flash drive->this never appears) on laptops with 64bitOS, or IHISI: Get support mode fail in SMI/BIOS did not support INSYDEFLASH on laptops with 32bitOS.