San Francisco, CA – AVM, the German manufacturer of FRITZ!Box routers, has released a new stable update, FRITZ!OS 8.22, addressing a critical bug affecting internet performance for some users. The update, rolled out on February 26, 2026, focuses on resolving interoperability issues with external modems and optimizing performance after extended use. This comes just weeks after the release of FRITZ!OS 8.20, which introduced features like FRITZ! Failsafe for improved connection reliability and enhanced smart home integration.
The primary issue addressed in FRITZ!OS 8.22 concerns performance degradation experienced by users of FRITZ!Box models 7690, 7630, 5690, and 4690 when utilizing external modems. According to AVM’s release notes, the update fixes Ethernet layer interoperability problems that could lead to noticeable slowdowns. The update resolves a performance issue that arose after prolonged operation when packet acceleration was enabled on the same models. AVM’s documentation details these fixes, emphasizing the importance of the update for maintaining optimal network speed and stability.
FRITZ!OS 8.20: A Foundation for Enhanced Connectivity and Smart Home Features
The release of FRITZ!OS 8.22 builds upon the significant improvements introduced in FRITZ!OS 8.20, launched earlier this month. FRITZ!OS 8.20 brought over 40 new features and improvements, with a key focus on ensuring users remain online even during primary connection outages. AVM’s official announcement highlighted FRITZ! Failsafe as a central component of this update. FRITZ! Failsafe allows a FRITZ!Box with a mobile network connection (or a USB tethered smartphone or dongle) to automatically accept over the internet connection if the primary connection – whether fiber, cable, or DSL – fails. This feature is particularly beneficial for users reliant on a stable internet connection for remote work or critical applications.
The FRITZ!Box 6860 5G and 6850 LTE models are specifically highlighted as being well-suited for FRITZ! Failsafe, when connected via WAN or LAN. This provides a seamless transition to a mobile network backup, minimizing downtime. The update also expands functionality within the FRITZ! Smart Home ecosystem. FRITZ! Smart Energy 250 now supports data recording from export meters, providing users with a comprehensive view of their energy production and consumption. FRITZ!OS 8.20 introduces additional triggers for smart home routines and simplifies the process of registering new devices, particularly when using a FRITZ!Box as a Mesh Master.
Improved Network Monitoring and Parental Controls
Beyond connectivity and smart home features, FRITZ!OS 8.20 also delivers enhancements to network monitoring and parental controls. The updated Online Monitor provides a clearer overview of data usage by individual devices over the past two weeks, enabling more precise network analysis. The process of selecting devices for data usage tracking has also been streamlined. These improvements empower users to better understand and manage their network traffic, ensuring optimal performance and security.
FRITZ! Failsafe: A Deep Dive into Redundancy
The introduction of FRITZ! Failsafe in FRITZ!OS 8.20 represents a significant step forward in ensuring reliable internet access. Traditionally, maintaining a consistent internet connection required a robust primary connection and often, a separate backup internet service. FRITZ! Failsafe streamlines this process by leveraging existing mobile network capabilities. AVM positions this feature as ideal for home offices and retail environments where uninterrupted connectivity is paramount. The ability to utilize mobile dongles or smartphones in USB tethering mode further expands the flexibility of FRITZ! Failsafe, making it accessible to a wider range of users.
The functionality relies on the FRITZ!Box automatically detecting a loss of the primary internet connection and then seamlessly switching to the mobile network backup. Users can configure the settings to prioritize specific mobile networks or set data usage limits for the backup connection. This level of control ensures that FRITZ! Failsafe operates efficiently and cost-effectively.
Smart Home Enhancements in FRITZ!OS 8.20 and 8.22
The FRITZ! Smart Home ecosystem continues to evolve with each FRITZ!OS update. FRITZ!OS 8.20’s integration with FRITZ! Smart Energy 250 allows for detailed monitoring of energy production and consumption, providing valuable insights for homeowners seeking to optimize their energy usage. The addition of new triggers for smart home routines expands the automation possibilities, enabling users to create more customized and responsive smart home experiences. The simplified device registration process, particularly for devices connected to another FRITZ!Box or a FRITZ! Smart Gateway, streamlines the setup process and encourages wider adoption of the FRITZ! Smart Home platform.
Further enhancements in FRITZ!OS 8.20 extend to the FRITZ! Smart Control 440, adding more control functions for FRITZ! radiator controls, including color and color temperature adjustments, and the ability to toggle Wi-Fi on or off. These additions demonstrate AVM’s commitment to expanding the functionality and versatility of its smart home offerings.
Looking Ahead: Continued Development and Support
AVM has a strong track record of providing consistent updates and support for its FRITZ!Box products. The rapid release of FRITZ!OS 8.22, addressing critical performance issues identified after the launch of FRITZ!OS 8.20, underscores this commitment. Users are encouraged to regularly check for updates through the FRITZ!Box user interface to ensure they are benefiting from the latest features and security enhancements.
The next scheduled update cycle is anticipated to focus on further optimizing mesh networking capabilities and expanding the integration with third-party smart home platforms. AVM has not yet announced a specific release date for the next major FRITZ!OS version, but users can expect continued improvements to connectivity, security, and smart home functionality. For the latest information and support resources, users can visit the official AVM website.
Have you experienced any issues with your FRITZ!Box? Share your thoughts and experiences in the comments below. Don’t forget to share this article with anyone who might benefit from these updates!