Don't. Just don't. G502 HERO firmware update through G HUB is broken. Waited for over 1.5h with the mouse "updating" and not working, and at the end had to disconnect and reconnect
Amazon.com: Logitech G502 Hero K/DA High Performance Gaming Mouse - Hero 25K Sensor, 16.8 Million Color LIGHTSYNC RGB, 11 Programmable Buttons, On-Board Memory - Official League of Legends KDA Gaming Gear :
G502 X Wireless Gaming Mouse | Logitech G
Logitech G HUB Advanced Gaming Software, RGB & Game Profiles
Logitech G502 Hero Wired Gaming Mouse With Knox Gear 3.0 4 Port Usb Hub : Target