Never download "driver updater" tools from third-party websites. They often contain malware. Always use the official Logitech website.
This is the most powerful feature of the driver. Driver Mouse Logitech G102
Without the driver, the G102 is a $20 office mouse. With the driver (Logitech G HUB), it becomes a precision instrument capable of hanging with $100 competitors. Just remember to use the On-Board Memory feature to save your settings and then close the software. Driver Mouse Logitech G102