Hg531s V1 — Firmware Download

Need help identifying your ISP’s firmware naming scheme? Post a photo of your “Status” page (blur your MAC address) in a dedicated subreddit like r/ONT or r/homenetworking.

The HG531s V1 is a popular ONT (Optical Network Terminal) or router unit, often deployed by ISPs (Internet Service Providers) like Claro, Telmex, or other Latin American carriers. If you are experiencing Wi-Fi drops, interface lag, or security vulnerabilities, updating the firmware is a critical step. Hg531s V1 Firmware Download