On this page you can find the information how to update.
The same firmware can be used for the N770.
September 2025
N870(E)/N770/N670/N610 - Release 2.65.0
May 2025
N870(E)/N670/N610 - Release 2.62.1
February 2025
Release 2.61.2
November 2024
Release 2.61.0