These tools are highly specific to the controller chip (e.g., Alcor, Phison, Silicon Motion) inside the USB drive. Using the wrong tool can permanently damage ("brick") the drive.
Based on your request, this appears to be a request for a firmware or mass production tool for a specific USB flash drive controller or hardware ("M368", 1680X1050, 512M). Download M368 1680X1050 512M USB part2 rar
To find the specific part2.rar file you need, you will likely find it on specialized mass production tool forums. usbdev.ru These tools are highly specific to the controller chip (e
: Use this tool first to identify the exact controller chip manufacturer and model in your drive to ensure you download the correct part. Download M368 1680X1050 512M USB part2 rar