Overview
- AVM released the final FritzOS 8.25 for the Fritzbox 6660 Cable and 6591 Cable after earlier testing in the Labor beta track.
- The firmware fixes a hardware acceleration flaw that dropped ICMP packets and could slow traffic or cause stutters.
- It also corrects home‑network and WAN readouts, including static‑IP devices shown as inactive and false reports that the WAN link was down, and it removes a limit that blocked remote‑access setup without an active connection.
- Users get a refreshed DVB‑C TV tuner screen, a clearer view of failover status in the online monitor, a new network‑segment load display, and simpler parental‑control schedules on phones and tablets.
- Updates arrive automatically if enabled or via fritz.box under System > Updates, with no timeline for other models, and ISP‑supplied units update through providers which can take longer.