Observed Signal · Sep 8, 2026 · Technical Release · Source: t3n · Impact: 2/5 · Sentiment: Positive
FritzOS 8.40 Beta Update Released for Multiple Fritzbox Routers
AVM has released a new lab update, FritzOS 8.40, for a range of Fritzbox routers. This beta version is now available for download for 18 models, including the Fritzbox 4690, 4050, 5590 Fiber, 5690 Pro, and others. The update introduces various features depending on the model, such as new DNS filter lists, enhanced Smarthome routines, overload protection for smart sockets, and for the flagship Fritzbox 7590 AX, a prioritization function for better internet connection, a DSL-to-fiber migration assistant, and automated video conference detection. Additionally, an SOS call feature with up to four emergency numbers is added to many models. Users must manually download the update from the manufacturer's website and install it via the router's web interface. As a beta, potential issues may arise, so users requiring stable operation should wait for the final release.
Technical release from a major router manufacturer, relevant to internet infrastructure but not directly advertising or marketing technology.
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Key Takeaways & Evidence Grounding
- AVM released FritzOS 8.40 as a lab (beta) update for 18 Fritzbox router models.
- The update includes features like DNS filter lists, Smarthome improvements, and a new SOS call function.
- The model Fritzbox 7590 AX also receives a prioritization function for internet connection and video conference detection.
- Users must manually download and install the beta from the manufacturer's website.
- The lab update is a beta version, and users are advised to wait for the final release for stability.
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FritzOS 8.50 Beta Adds Smart Check and DNS Filter
AVM has released a new beta version of its FritzOS 8.50 update for seven router models, introducing several new features focused on network diagnostics and security. The MyFritz app now includes a Smart Check tool that provides real-time status on telephony, home network, and WLAN, and can alert users to issues like a missing mesh connection. Additionally, a new DNS filter can block malicious websites, phishing pages, and trackers at the router level, protecting all devices in the home network. The update also improves video conferencing through automatic prioritization of real-time communication and extends the FritzFailsafe feature to 4G and 5G models. The final release date for FritzOS 8.50 has not been announced, but the beta is available for multiple FritzBox models.
FritzOS 8.5 Adds DNS Ad Blocking for Smart TVs
AVM's Fritzbox routers are introducing DNS-based filtering in FritzOS 8.40 and 8.50, enabling users to block ads displayed on Smart TV home screens. This feature allows users to create or import filter lists (e.g., from hagezi/dns-blocklists) directly on the router, preventing the TV from fetching ad content from manufacturer domains. Initially, FritzOS 8.50 is available only for the Fritzbox 7690, while the beta version 8.40 supports a range of DSL, cable, fiber, and mobile models. The article provides step-by-step instructions for installing the beta and configuring DNS filter lists. This development empowers consumers to reduce unwanted advertising on their TVs without needing external hardware like a Raspberry Pi running Pi-hole, potentially impacting the ad-supported TV business model.
Fritz OS 8.40 adds DNS-based ad blocking for smart TVs
Fritzbox routers with the upcoming Fritz OS 8.40 update will allow users to block ads on their smart TVs using DNS filter lists. Currently in beta as a lab version, the feature lets users manually add filter lists to block ad-related domains at the router level, preventing ads from loading on smart TV home screens across all devices on the home network. This offers a simpler alternative to dedicated solutions like Pi-hole, which require a separate always-on device. Supported Fritzbox models include various fiber, DSL, cable, and 5G models. Users can manually install the beta firmware from AVM's website and configure custom filter lists via the router's web interface under 'Network Settings' -> 'DNS Filter'. The feature has been tested successfully with a Roku TV using the hagezi/dns-blocklists project on GitHub, and can also block ads on Fire OS, webOS, and Samsung TVs.
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