The latest lab file on our download server, "fritzboxlabor-5590_Fiber_Labor-xxxx.zip", contains
- the lab version for your FRITZ!Box
- this "infolab-en.txt" file with important information on this lab version
- information, feedback options, and the file at en.fritz.com/fritz-lab


New Features: 
- Substitute connection: Better fallback protection for the internet connection
- Optimized parental controls
- More possibilities in the smart home
- Online Monitor with expanded functions

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# New Features and Improvements in FRITZ!OS 8.20
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## Internet:
- **NEW** With the new fallback protection, the FRITZ!Box always stays online: If the internet connection fails, an alternative internet connection is established via the access device of your choice, e.g. via the mobile network with FRITZ!Box 6820 LTE or via USB mobile network dongles
- **NEW** Additional display option in the Online Monitor of individual devices shows usage by not explicitly selected devices with and without data recording
- **NEW** Display of load on network segment through own use and the use of other users
- **NEW** In the Online Monitor the display of the load on the internet connection allows selection of not only one day or two months but also an interval of 2 weeks
- **NEW** Online Monitor shows the network devices with the highest use of the internet connection (top consumers)
- **NEW** Simplified user guidance on the "Filter" pages (parental controls)

## Mesh:
- **NEW** Automatic detection of device type (e.g. smartphone, computer, or printer) for devices displayed in the Mesh Overview

## Home Network:
- **NEW** EEE (Energy Efficient Ethernet) can now be set separately for each WAN/LAN port

## Smart Home:
- **NEW** Routines can also be triggered by a phone call, by reaching a target temperature, or by activating boost or antifreeze functions, as well as by important events on the FRITZ!Box
- **NEW** Templates and routines can be triggered with delay
- **NEW** With FRITZ!Smart Control 440, the following functions can be controlled: the boost and frost protection functions for radiator controllers, the color and color temperature for lamps, the activation and deactivation of routines, and the display of the QR code for Wi-Fi

# Further Improvements of FRITZ!OS

## Internet:
- **Changed** FRITZ! devices in the home network, e.g. FRITZ!Repeaters, are no longer offered in parental controls and prioritization; they always have unrestricted internet access with normal priority
- **Changed** Private IPv4 addresses (RFC 1918) are no longer posted via MyFRITZ!Net (DNS) if a publicly accessibly IPv6 address is available
- **Changed** When VPN connections are active for which all network traffic is routed via the VPN connection ("full tunnel"), the guest network is excluded from this and routed over the normal internet connection
- **Fixed** Creation of new WireGuard® VPN connections could fail if many WireGuard® VPN connections had already been created
- **Fixed** Enabling the UPnP filter had no effects for IPv6
- **Fixed** For FRITZ! devices operated exclusively via IPv6, under some circumstance there was no search for new FRITZ!OS versions (updates)
- **Fixed** For providers without support for IPv6, the Online Meter did not count consumption values as long as IPv6 was enabled in the account information of the FRITZ!Box
- **Fixed** Parental controls: Redeeming tickets to extend online time failed in certain scenarios
- **Fixed** Possible internet disruptions when using a large filter list for blocked websites
- **Fixed** Potential incorrect display in the Online Meter of the use of data capacity during the billing period
- **Fixed** The rate information in the Online Meter showed an incorrect end of the billing period
- **Fixed** Under certain circumstances, a FRITZ! product operated exclusively via IPv6 could not obtain the system time via the Network Time Protocol
- **Improved** Completely reworked network settings
- **Improved** Device selection for display and data recording simplified in the Online Monitor
- **Improved** For the internet provider 1&1 Telecom GmbH, the opportunity to switch to an internet connection via WAN is offered under "Internet > Account Information" (5xxx only)
- **Improved** If the configured time server could not determine the system time, the system time is obtained from a public time server
- **Improved** In the settings for parental controls can now be specified whether network applications are blocked or allowed
- **Improved** Number of tickets to extend online time for devices blocked by parental controls was increased from 10 to 12
- **Improved** Online Monitor: Reworked display in the diagrams for the load on the internet connection
- **Improved** Online time for a network device with restricted online time now can also be extended for 45 minutes directly in the parental controls
- **Improved** Reworked diagrams and colors in the Online Monitor
- **Improved** Telekom Easy Support: Simplified configuration on Telekom fiber optic or DSL line enabled for internet access and telephone numbers (FRITZ!Box 5690 Pro only)

## Wi-Fi:
- **Changed** Incongruous information text for configuration of the Wi-Fi guest access on the Mesh Repeater removed

## DECT/FRITZ!Fon:
- **Improved** Podcasts can now be continued after interruption

## Home Network:
- **Fixed** In special scenarios it was possible for the IP address 192.168.178.1 to be displayed for a repeater in the home network instead of its own address
- **Fixed** "Home Network / Network Connections" page was not displayed (empty page) when a FRITZ!Box was configured as a Mesh Repeater in router operation

## Smart Home:
- **Improved** Roller shutters can now be combined into groups and the slats of blinds set

## System:
- **Fixed** Despite correct rate settings, the "Info" LED did not flash when online volume exhausted
- **Fixed** Incorrect configuration could lead to restart after update in certain rare cases
- **Fixed** Preview of personalized subject line from push service shows the preceding parentheses only if they were actually entered
- **Fixed** Push service sent the Forgot Password link of devices configured as IP clients with the incorrect IP address
- **Improved** "Forgot Password" function of the push service can now be configured with a freely chosen recipient
- **Improved** File name for saved settings now includes name of individual FRITZ!Box
- **Improved** Functional diagnostics now indicates when access for apps is disabled in the home network sharing settings
- **Improved** Indication of disabled TR-064 added to the Function diagnostics
- **Improved** Reworked pages of the update functions under "System > Update"
- **Improved** The "Diagnostics > Function" page now displays information on problems with time synchronization via NTP
- **Improved** With "Diagnostics > Function" the services for the Network Time Protocol are checked and relevant information displayed about any errors found

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History of new Functions and Improvements in FRITZ!OS 8.24

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# Improvements of FRITZ!OS 08.24-131382

## Internet:
- **Fixed** Blocking devices in guest networks with the filter system did not wirk properly

## System:
- **Improved** Stability


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# Improvements of FRITZ!OS 08.24-131083


## Internet:
- **Fixed** After changing the country and time zone settings, the Online Monitor could no longer be opened

## System:
- **Fixed** After changing country and time zone, the time stamp in the user interface was not updated
- **Fixed** Changes to the time server could cause the FRITZ!Box to restart
- **Improved** Stability

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# Improvements of FRITZ!OS 08.24-130535

## Internet:
- **Fixed** In the Online Monitor, the connection status was incorrectly marked as inactive when an existing internet connection was being used
- **Fixed** Online Meter remained at 0 during connections via mobile network

## System:
- **Improved** Stability
- **Improved** Translations added

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# Improvements of FRITZ!OS 08.24-130006


## Internet:
- **Changed** Root certificate added for DNS over TLS with SSL.com
- **Fixed** In the Connection Details in the Online Monitor, the status of the WAN connection was sometimes displayed as inactive despite an active internet connection
- **Fixed** Incorrect error handling during storage of prioritization rules
- **Fixed** The summary of individual access profiles for parental controls displayed "No restriction" despite restrictive settings
- **Fixed** When the standard profile in the parental controls was blocked, sometimes authorized devices could no longer register with the Wi-Fi network
- **Improved** Better interoperability with newer browser versions
- **Improved** Detailed rendering of fallback protection in Online Monitor
- **Improved** Operation of schedules in the parental controls reworked for small displays (smartphones, tablets)
- **Improved** Support for fallback protection also for primary internet connections with a fixed IP configuration
- **Improved** Support of IPv6 configuration for fallback protection

## Telephony:
- **Changed** Root certificate added for encrypted VoIP with SSL.com

## Home Network:
- **Fixed** In certain scenarios, unnecessary entries for switches (FA:CE:...) were displayed in the idle connections section
- **Fixed** In special scenarios it was possible for the IP address 192.168.178.1 to be displayed for an extender in the home network instead of its own address
- **Fixed** Names of home network devices were occasionally assigned incorrectly
- **Fixed** Under some circumstances active devices with static IP addresses were displayed as inactive and vice versa

## System:
- **Fixed** For very slow internet connections it could happen that a FRITZ!OS update via the user interface was interrupted before completion
- **Improved** Robuster error handling during update search
- **Improved** Simplified setup: When setting up international products, it is no longer necessary to restart after selecting country and language
- **Improved** Stability

# Improvements of FRITZ!OS within FRITZ!Labor

## Internet:
- **Fixed** Display of DNS server in the Connection Details of the Online Monitor was incomplete in certain scenarios
- **Fixed** Online Meter remained at 0 during connections via mobile network
- **Improved** Tooltips in the Online Monitor are easier to read by hiding entries with 0 Mbit/s

## Wi-Fi:
- **Fixed** Inactive Wi-Fi networks were not displayed on the Overview page
- **Fixed** Various registration problems with wireless devices
- **Improved** Better stability

## System:
- **Fixed** Some pages were not refreshed automatically
- **Improved** Stability

## USB:
- **Fixed** In some cases, the user interface displayed an empty page

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Additional Feedback on FRITZ!OS
======================================

In addition to direct feedback in our lab area en.fritz.com/fritz-lab, there are three additional feedback functions in the user interface which provide information. We have automated the processing of feedback supplied by these functions.

1) DSL feedback via "Internet / DSL Information / Feedback"
2) Wi-Fi feedback via "Wi-Fi / Wi-Fi Network": Feedback icon after the clients
3) VoIP feedback via "Telephony / Telephone Numbers / Voice Transmission", "Other" column: Feedback icon after each call


Information on the Lab update:
============================


This FRITZ! Lab firmware is a beta version. We've tested it in standard environments before release, but it may still result in bugs. FRITZ! is not liable for any damages that may arise from the use of the Lab version.

Information on working with Lab versions

We appreciate any feedback from our users, which can be submitted at: en.fritz.com/fritz-lab. This page also lists all of the current FRITZ! Lab versions with corresponding feedback areas.

Before you start testing the Lab version

1) You haven't installed the latest firmware for your FRITZ!Box yet? You first need to update the firmware to the latest release.
2) Save your current settings under "System / Backup". The saved settings will be needed if you want to switch back from the Lab firmware back to the release firmware.


Testing the Lab version

Once the latest FRITZ!OS version has been installed on your FRITZ!Box and you've saved your current settings, you can begin testing.

1) Unzip the "fritzbox-yyyy-labor-xxxxx.zip" file.
2) Use the FRITZ!Box user interface to install the update:
- Select "View: Advanced" in the footer.
- Click "Update" in the "System" menu.
- Switch to the "FRITZ!OS File" tab.
- Follow the instructions displayed on the screen.
- Enter the path to the Lab firmware and the name of the Lab file (FRITZ.Box_xxxx-0x.xx-xxxxx-Labor.image) in the input field.
3) The Lab version is installed on the FRITZ!Box. The FRITZ!Box will then restart.


Restoring your device to how it was before testing
You can switch back to the official FRITZ!OS at any time under "System > Update > FRITZ!OS Version" or reset the FRITZ!Box back 
to the official FRITZ!OS using the enclosed Windows program "recover.exe" (included in the Lab package).

_________________________________________________________


© FRITZ! GmbH 2004—2026. All rights reserved.

This FRITZ! firmware package contains files that are distributed under various licenses, in particular under an FRITZ! proprietary license 
or an open-source license (GNU General Public License, GNU Lesser General Public License or FreeBSD License). For details on the various 
licenses, see the "license.txt" file (https://download.avm.de/fritzbox/license.txt).
The source code of the files distributed as open source can be requested in writing to fritzbox_info@avm.de.

FRITZ! grants the non-exclusive right to use this FRITZ! firmware package, which is supplied exclusively in object code format. 
The licensee may create only one copy of the software, which may be used exclusively for backup purposes.
FRITZ! reserves all intellectual property rights except as expressly granted herein. In particular, without previous approval in writing 
and except as permitted by law, this FRITZ! firmware packet may not
be reproduced, distributed or in any other manner made publicly accessible,
nor may it be edited, disassembled, reverse engineered, translated, decompiled or otherwise "opened" in whole or in part, and subsequently reproduced, distributed or made publicly accessible.
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HKR20260303