If you have acquired the official, verified firmware file from your telecom provider, follow these steps to update your gateway: Phase 1: Preparation
: Nokia typically provides firmware directly to network operators rather than offering standalone public download links for end-users. Automatic Updates nokia fastmile 5g gateway 3.2 firmware download
Nokia FastMile 5G Gateway 3.2 Firmware Download: Ultimate Guide If you have acquired the official, verified firmware